1) Select what mold steel is the most important and most decisive factor?
Forming methods - materials from the two basic types of options.
A) hot-working tool steel that can withstand the die casting, forging and extrusion of the relatively high temperature.
B) cold working tool steel, it is used for blanking and cutting, cold forming, cold extrusion, cold forging and powder compression molding.
Plastics - some plastics will produce corrosive by-products, such as PVC plastic. Long lay-off caused by condensation, corrosive gases, acids, cooling / heating, water or storage conditions and other factors will cause corrosion. In these cases, it is recommended to use stainless steel mold steel.
Die size - large pre-hardened steel molds are often used. Hardened steel is often used for the overall small size mold.
Die frequency of use - long-term use (> 1 million times) of the mold should use high-hardness steel, its hardness is 48-65HRC. Moderate long-term use (100000-1000000 times) should be used to pre-hardened mold steel, its hardness is 30-45HRC. Short-term use (surface roughness - Many plastic mold manufacturers interested in a good surface roughness when adding sulfur to improve metal cutting, the surface quality will be diminished. Sulfur content of steel has also become more brittle.http://www.prmindustry.com/Abstract...Articles section 2) cutting of materials can affect the primary factor?
The chemical composition is very important. The higher alloy steel, the more difficult process. When the carbon content increases, the metal cutting it down.
Steel structure of the metal cutting is also very important. Different structures, including: forging, casting, extrusion, rolling and cutting off already. Forgings and castings are very difficult to machine the surface.
Affect the hardness of metal cutting is an important factor. General rule is the more hard steel, the harder process. High-speed steel (HSS) can be used to process up to 330-400HB hardness of the material; high-speed steel + titanium nitrogen (TiN) coating, can process up to 45HRC hardness of the material; and hardness 65-70HRC for materials, you must use of carbide, ceramic, metal ceramic and cubic boron nitride (CBN).
Non-metallic mixed general have an adverse effect on tool life. For example, Al2O3 (alumina), it is pure ceramic and has a strong abrasive.
The last one is the residual stress, it can cause problems in metal cutting. Often recommended in the rough after the release of the stress process.
3) the cost of production mold from which parts?
Roughly speaking, the cost of distribution is as follows:
Cutting 65%
20% of the workpiece material
5% heat-treatment
Assembly / adjustment of 10%
It is also very clear that a good metal cutting performance and excellent overall die cutting solutions for the importance of economic production.
4) What are the characteristics of cutting cast iron?
In general, it is:
The higher the hardness and strength of cast iron, metal cutting, the lower, from the blade and tool life can be expected lower.
The production of cast iron for metal cutting most types of metal cutting its generally very good. And structure of metal cutting, hard machining pearlitic cast iron its greater difficulty. Flake graphite cast iron and malleable cast iron has excellent cutting properties, but ductile iron is poor.
Encountered when machining cast iron main types of wear: abrasion, adhesion and diffusion wear. Mainly by the carbide abrasive, sand casting parameters and hard skin debris generated. BUE bond with wear at low cutting temperature and cutting speed conditions occur. Ferritic cast iron some of the most easily welded to the blade, but this can increase the cutting speed and temperature to overcome.
On the other hand, diffusion wear and temperature, generated at high cutting speed, especially when using high-strength cast iron grades. These grades have a high resistance to deformation capacity, resulting in a high temperature. This cast iron and tool wear and the role of the between, which makes some of the iron required ceramic or CBN (CBN) cutting tools in high speed machining, in order to get a good tool life and surface quality.
Generally required for the processing of a typical cast iron tool attributes are: high fever hardness and chemical stability, but also with the process, the workpiece and cutting conditions; requires cutting edge toughness, thermal fatigue, wear and edge strength. Satisfaction depends on cutting cast iron wear how to develop cutting edge: rapid thermal blunt means leaving the cutting edge cracks and gaps in premature fracture, broken parts, surface quality is poor, excessive waviness, etc. Normal flank wear, balance and sharp cutting edge is generally required to do.
5) What is the main mold, common manufacturing processes?
Cutting process should be divided into at least three types of processes:
Roughing, semi finishing and finishing, super finishing and even sometimes (mostly high-speed cutting applications). Residue in the semi-finishing milling process is of course after finishing the preparation. In each process should strive for the next in the process leaving a uniform distribution of the margin, it is very important. If the tool path direction and the work load with little rapid change, may extend tool life and more predictable. If possible, it should be a dedicated machine for finishing operations. This will be a shorter period of time debugging and assembly geometry to improve accuracy and quality of the mold.
6) In these different processes should be the main tool in what?
Roughing operations: circular blade cutter, the ball end mill and a large corner radius end mill.
Semi-finishing operations: circular blade cutter (diameter range 10-25mm round blade cutter), ball-end cutter.
Finishing operations: circular blade cutter, the ball-end cutter.
Residue milling process: round blade cutter, ball mill, vertical mill.
By selecting a special tool size, geometries and grades combined, and the cutting parameters and the appropriate milling strategy to optimize the cutting process, which is very important.
On the use of high-productivity tools, see the mold with the sample C-1102: 1
7) in the cutting process, there is no one of the most important factor?
Cutting process is one of the most important goal in each process for each tool to create uniform distribution of allowances. This means that you must use a different tool diameters (descending), especially in the rough and semi-finishing processes. The main criteria should be any time in each process with the final shape of the mold as much as possible similar.
Provided for each tool to ensure a uniform distribution of allowances constant and high productivity and safety of the cutting process.
When ap / ae (axial depth of cut / radial depth of cut) is constant, cutting speed and feed rate can be constant to maintain a high level. This mechanical action on the cutting edge and work load changes on the small, resulting in less heat and fatigue, resulting in improved tool life. If the process is behind some semi-finishing operations, in particular, all the finishing process, no one can be no processing or part processing. Constant of the material allowance is the basic standard high-speed cutting applications.
Another constant allowances beneficial effect of machine tools - rail, ball screw and the adverse effects of small spindle bearings.
8) Why do most often round blade cutter as a mold roughing tool of choice?
If you use the square shoulder milling cutter for thick cavity, in the semi-finishing is necessary to remove a large number of step-like cutting margin. This will change in cutting force, the tool bending. The result is uneven to the left finishing allowance, thus affecting the accuracy of the mold geometry. If the strength of the weak side shoulder tip cutter (with triangular blade), cutting will produce unpredictable effects. Triangle or diamond blade will have a greater radial cutting forces, and because the insert cutting edge of a small number, so they are less economical roughing tool.
On the other hand, round blades in a variety of materials and milling on all directions, if you use it, the transition between the adjacent tool path more smooth, semi-finishing can also leave a smaller and more uniform processing margin. One of the characteristics of a round blade that they have the chip thickness is variable. This makes them use more than most other blade feed rate. The main circular blade angle from almost zero (very shallow cut) changed to 90 degrees, very smooth cutting action. The maximum depth of the cut, the main angle of 45 degrees, when along with the straight-walled cylindrical contour cutting, the main angle of 90 degrees. This also explains why the strength of a large circular blade cutter - cutting load is gradually increased. Roughing and semi-roughing cutter blade should always be round, as CoroMill200 (see mold sample C-1102: 1) as the preferred. In 5-axis cutting, circular blade is ideal, especially when it no restrictions.
Through the use of good programming, round blade cutter can be largely replaced by the ball-end cutter. Small amount of beating and grinding of the circular blade, positive rake angle and cutting trough the combination of light can also be used for semi-finishing and some of the finishing process.
9) What is the effective cutting speed (ve) and why it is very important to high-productivity?
Cutting, the actual or effective diameter on the basic calculation of the effective cutting speed is always very important. As the table feed rate depends upon the cutting speed under the speed, if you do not calculate the effective speed, table feed rate will be calculated error.
If the cutting speed used in the calculation of the name of the tool diameter (Dc), when the shallow depth of cut, the effective or actual cutting speed is much lower than calculated. If a round blade CoroMill200 tool (especially in the small diameter range), ball mill, a large nose radius end mills and CoroMill390 cutter like tool (these tools, see Sandvik Coromant tooling manufacture of sample C-1102: 1). As a result, the calculated feed rate is much lower, which seriously reduces productivity. More importantly, the tool cutting conditions recommended below its capacity and range of applications.
When the 3D cutting, cutting changes in diameter, with the geometry of the mold. One solution to this problem is to define the mold area and geometry of steep shallow parts area. If prepared specifically for each region of the CAM program and cutting parameters, we can achieve a good compromise and results.
10) for successful milling of hardened tool steel, the important parameters which application?
High-speed milling of hardened tool steel for finishing, a subject of the main factors is the use of shallow cutting.
Depth of cut should not exceed 0.2/0.2mm (ap / ae: axial depth of cut / radial depth of cut). This is to avoid the shank / cutting tool is too large to maintain the bend and mold machining with close tolerances and precision.
Choose a good rigid clamping system and tool is also very important. When using solid carbide cutting tools, the use of the maximum core diameter (maximum flexural rigidity) of the tool is very important. A rule of thumb is, if the tool diameter increased by 20%, for example, from 10mm to 12mm, the bending tool will reduce by 50%. It can be said that if the tool overhang / extend some 20 percent reduction, will reduce the bending tool 50%. Large diameter and taper of the shank to further enhance the stiffness. When using indexable ball end mill (see mold sample C-1102: 1), if the knife handle with solid carbide manufacturing, bending rigidity can be increased 3-4 times.
When high-speed milling of hardened tool steel for finishing, select specific geometries and grades are also very important. Choose such a high fever as the hardness of the TiAlN coating is also very important.
11) What should be used when climb milling, milling should be used when?
Main recommendations are: as much as possible using climb milling.
When the cutting edge for cutting just in climb milling, the chip thickness can reach its maximum value. In milling, the minimum value. In general, the tool life in milling than climb milling in short, this is because the heat generated by milling than climb milling in significantly high. When the milling in the chip thickness from zero to maximum, due to the cutting edge by friction in the strong than in the cis-milling, it will produce more heat. Milling in the radial force is also significantly higher, which have an adverse effect on the spindle bearings.
In climb milling, the cutting edge mainly by the compression stress, which is produced by milling in tension compared to the cemented carbide or solid carbide cutting tools much more favorable effects. Of course there are exceptions. When using solid carbide end mills (see mold sample C-1102: 1 in the tool) for side milling (finishing), especially in the hardened material, the milling is preferred. This easier access to smaller wall straightness tolerance and a better 90-degree angle. Different axial passes if there is no overlap between the words, then the marks are very small. This is mainly because the direction of cutting force. If you use a very sharp cutting edge, cutting knife will tend to "pull" the material. You can use the milling is another example of using the old manual milling machine for milling, milling of the old screw with a larger gap. Milling cutting force generated to eliminate the gap, so that milling operation more stable.
12) contour milling or contour cutting?
Milling in the cavity to ensure a successful climb milling tool path the best way is to use contour milling path. Cutter (for example, ball mills, see mold sample C-1102: 1) along the outer contour milling often get high productivity, because the larger the tool diameter, there are more teeth in the cutting . If the spindle speed is limited, contour milling will help maintain the cutting speed and feed rate. With this tool path, the work load and direction of change is also small. Applications and high-speed milling hardened materials processing, which is especially important. This is because if the cutting speed and feed rate high, the process of cutting edge and cutting the work load will be more vulnerable to the adverse impact and direction of change, work load and direction of change may lead to changes in cutting force and tool bending. Should be avoided along the cliffs of profile milling. Contour milling under low cutting speeds the chip thickness. In the ball-end cutters central, and the risk of broken edge collapse. If control is poor, or no read-ahead function machine, you can not slow down quickly enough, the most likely to occur in the central danger of broken edge collapse. Along the steep contour milling on a good number of the cutting process, which is advantageous because the chip speed, chip thickness to its maximum value.
To get the longest tool life, in the milling process should be cutting edge as long as possible to maintain a continuous cutting.
If the tool is too frequent entry and exit, tool life will be significantly shortened. This makes the cutting edge of the increased thermal stress and thermal fatigue. In the cutting area with uniform and high temperature than those with large fluctuations of the better modern carbide cutting tools. Copy milling path is often a mixture of milling milling rolls (zigzag), which means cutting will frequently eat and retract. This tool path quality of the mold has a bad effect. Each cutting tool cutting tool bending means, on the surface have lifted the mark. When the tool exits, cutting force and tool bending decreases, there will be slight in the exit part of the material "over the cutting."
13) Why do some milling cutter must have a different pitch?
Mills is a multi-tool cutting edge, the number of teeth (z) is changed, there are some factors that can help determine the process for different types of pitch or number of teeth. Material, part size, the overall stability of the overhang dimensions, surface quality requirements and the available processing power is concerned with the factors. And tool-related factors include adequate amount of feed per tooth, while at least two teeth in the cutting tool and the chip size, which is one of only a small part.
Cutter pitch (u) is on the cutting edge blade to the next point on the cutting edge with a point distance. Cutter into sparse, dense and ultra-fine pitch cutters, most of the Coromant cutters are three options, see the mold sample C-1102: 1. Close pitch is to have more teeth and proper chip space, high metal removal rates can be cut. Generally used for cast iron and steel milling medium load. Close pitch cutter is a common choice, recommended for hybrid production.
Sparse pitch refers to the cutters have fewer teeth on the circumference and a large chip space. Sparse pitch often used to roughing to finishing of steel, steel processing in the processing of the results of vibration on a great influence. Sparse pitch is truly effective solution to the problem, it is a long overhang milling machine or other low power applications must reduce the cutting force of choice.
Ultra-fine pitch cutter chip space is very small, you can use a higher table feed. These tools are suitable for intermittent cutting of cast iron surface, iron and steel roughing cutting a small margin, for example side milling. They also must maintain a low cutting speed suitable for the application. Mills also has a uniform or varying pitch. The latter tool is not equal intervals on the teeth, which is an effective way to solve the vibration problem.
When there is vibration, the recommended range as far as possible sparse tooth pitch cutter. As a small blade, increasing the likelihood of a small vibration. Small tool diameter can improve the situation. Well should be used to adapt the trough and the combination of grades - a sharp cutting edge and toughness combination of good grades.
14) For best performance, how to locate cutter?
Cutter cutting length will be affected by the position. Tool life and cutting edge often must bear the cutting length. Located in the central parts of the cutter cutting the length of its short, if the cutter centerline deviation in either direction, cutting the arc is long. Remember, how the role of cutting force, must reach a compromise. Workpiece positioned in the center of the tool case, when to enter or exit the insert cutting edge cutting, radial cutting force on the direction of change. Spindle vibration of the gap also increased, leading to blade vibration.
By making the tool away from the center, will be constant and favorable cutting force direction. The longer the overhang, the vibration is also possible to overcome all the more important.
15) In order to eliminate vibration during cutting, what measures should be taken?
When there is vibration problems, the basic measure is to reduce the cutting force. This is done by using the right tools, methods, and cutting parameters to achieve.
Has proven to comply with the following suggestions:
- Select a sparse pitch or pitch range cutter.
- Use positive rake angle, a small cutting insert geometries.
- Whenever possible, use a small cutter. When using the damping rod connected to milling, which is especially important.
- Use a small radius of the cutting edge passivation (ER) of the blade. From the thick coating to thin coatings. If you need to use non-coated blades. Matrix should be used for the fine grain particles of high-grade blade toughness.
- Use a large feed per tooth. Reduce speed and maintain table feed (equal to the greater amount of feed per tooth). Increase or maintain speed and table feed rate (the larger the amount of feed per tooth). Do not reduce the amount of feed per tooth!
- Reduce the radial and axial depth of cut.
- Select a stable handle, such as Coromant Capto. Use the largest possible size of the access handle to get the best stability. Use taper plus pole for maximum rigidity.
- For large overhang, the use of pitch range and sparse pitch cutter bar connected with the shock. When installing cutter, then handle the cutter directly connected with the shock.
- Deviation from the cutter workpiece center.
- If you use the tool even teeth - every tooth can be removed a blade.
16) In order to balance the tool, the most important measures should be taken to what?
Throughout the cutting process, the tool to achieve a balance to the typical steps involved are as follows:
- Measurement tool / toolholder assembly imbalance.
- By changing the cutting tool, cutting it to remove some of the quality, or move the handle to reduce weight on the imbalance.
- Often have to repeat these steps, including re-checking tool, fine-tune again until it reaches equilibrium.
Tool balance also involves several processes have not discussed the instability. One of them is the co-ordination between the shank and the spindle problem. The reason is that often there are measurable clamping gap, it may have chip taper or dirty. This will result in each orientation is not taper the same. Even if the tool, toolholder and the spindle in all aspects of the state are good, but if there is contamination, can also cause imbalance. In order to balance the tool must be able to increase the cost of the cutting process, if the tool is very important to balance cost reduction, it should be and the specific circumstances of each analysis.
However, in order to balance the well tool in choosing the right tool when there is much work to do. The following points are to select the tool should be given consideration:
- To buy high-quality tools and tool holders. Should be selected in advance to eliminate the imbalance has been the hilt.
- The best short and as light as possible using the tool.
- Regular inspection tool and holder, check the signs of fatigue and deformation of thread.
Process tool can accept unbalanced situation by the process itself to determine. These include the cutting process of cutting force, machine tools, and these two factors balance each other impact. Test is the best way to find the best balance. Run with several different values of the imbalance, for example, a value of 20 g mm from unbalanced or less started. After each run, and then repeat the test more balanced tool. The best balance should be such a point: beyond that point, the balance will not increase further improve the tool workpiece surface quality; or such a point: at this point process can be easy to ensure the provisions of the workpiece tolerances.
The key is always to focus on process, rather than balancing class-G value, or any other to determine the equilibrium value as the target. This goal should be to achieve the highest possible efficiency of the process. This involves weighing the cost of the tool and thus balance the gains, so the costs and benefits should be a balance between reasonable.
Balance on the tool more detailed technical information, please contact your local Coromant representative.
17) in conventional and high-speed machining applications, in order to get the best possible results, what should I use the handle?
High-speed machining, the centrifugal force is very large, will lead to larger spindle hole slowly. This is some of the V-shaped flange of the handle will have a negative impact, because the V-shaped flange of the shank and the spindle only in the radial surface of the hole contact. Conference of the tool change spindle hole in the rod under a constant tension is pulled into the spindle. This may even cause the tool Z-axis direction of the stick or reduced dimensional accuracy.
Simultaneously with the spindle hole and face contact with the tool, while the radial and axial with the tool is more suitable for high speed cutting. When the spindle hole enlargement, face contact with the tool in the spindle hole to prevent upward movement. Using the hollow shank of the tool is also vulnerable to the effects of centrifugal force, but they have been designed with the high speed spindle hole increases. Tool and the spindle in both radial and axial clamping provides a good contact with the rigid, so that the tool can be high-speed cutting. Uses a unique Tri-oval design of a short cone Coromant Capto coupling in the transmission of torque and high productivity cutting, with better performance.
High spindle speeds Spindle table surface contact
Spindle speed ISO40HSK50ACoromantCaptoC5
0100% 100% 100%
20000100% 100% 95%
2500037% 91% 99%
3000031% 83% 95%
3500026% 72% 91%
4000026% 67% 84%
When the arrangements for high-speed cutting, should be used by the symmetric combination of tool and tool holder system. There are several different tools available in the system. First heated to shank hole expansion until they cool tool was clamped, and this is the interference with the system. For high-speed cutting, this is the best and most reliable method of the fixed cutter. This is primarily because of its very small amount of beating; Second, this connection can transmit large torque; Third, it is easy to build custom tools and tool components; Finally, in this way the tool assembly consisting of a very high overall rigidity.
Another excellent and very versatile tool clamping device is a powerful Coromant precision chuck - CoroGrip. This system covers the handle from roughing to finishing over all applications. A chuck to clamp a straight shank, Wyeth groove or lateral pressure-type holder for face milling cutter to drill all types of tools. Standard spring sets, such as the available hydraulic (HydroGrip), BIG, Nikken, NT's spring sets, can be used CoroGrip chuck. Beating at the 4XD was only 0.002-0.006mm. Clamping force and torque transmission is particularly high, its balanced design makes for high-speed cutting
18) How should I cut the corner to the risk of no vibration?
The traditional method is to cut the corner using a linear cutting (G1), in the corner of the transition is not continuous.
This means that when the tool reaches the corner, due to the dynamic characteristics of the linear axis limit, the tool must slow down. Change the motor direction of feed, there is a short pause, which will generate a lot of heat and friction. Long contact length will lead to cutting instability, and often make less than cutting corners. A typical result is vibration - the greater and longer tool or tool the greater the total overhang, the stronger the vibration.
The best solution for this problem:
? With radius smaller than the corner radius of the tool. Generated using circular interpolation corner. This processing method in the block boundary does not produce a standstill, which means that the tool provides a smooth and continuous movement of the transition, the possibility of vibration greatly reduced.
? Another solution is to produce circular interpolation than by drawing on the provisions of slightly larger radius. This is very beneficial, so that sometimes can be used in the larger roughing tool, in order to maintain high productivity.
? Allowances remaining in the corner of the tool can be used to fix small circular interpolation milling or cutting.
19) What is the best way to start cutting the cavity?
There are four main ways:
? Initial pre-drilling holes, corners can be pre-drilling. Not recommend this approach: it requires adding a tool, this tool should also take the tool of interior space. Just from the point of view of the cutting tool through the pre-drilling holes and cutting force due to a negative vibration. When using pre-drilled holes, often lead to tool damage. Use of pre-drilling holes will increase the chip re-cutting.
? If you use the ball-end cutter or round blade cutter (see mold sample C-1102: 1), usually pecking milling, to ensure that all the axial depth of cut can be. The disadvantage of this approach is to use a round blade chip problem and will have a very long chip.
? Best way is to use X / Y and Z direction to go cutting linear slope, in order to achieve full axial depth of cut.
Finally, in the form of circular interpolation milling spiral. This is a very good way, because it can produce smooth cutting action, and only requires a small starting space.
20) What is the definition of high-speed cutting?
For discussion of high-speed cutting to some extent still is confusing. How to define high-speed machining (HSM), there are many ideas and many ways.
Let's look at a few of these definitions:
? High cutting speed cutting
? High spindle speed cutting
? High feed cutting
? High-speed and high feed cutting
? High productivity cutting
We describe high-speed cutting is defined as follows:
? HSM is not a simple sense of the high cutting speed. It should be considered with specific methods and equipment for processing technology.
? High-speed spindle speed cutting without cutting. Many high-speed machining applications based on medium speed spindle and tool for the use of large size.
? If the high cutting speed and high feed conditions for finishing of hardened steel, cutting parameters for the conventional 4 to 6 times.
? In small parts of the roughing to semi-finishing, finishing and super finishing of parts of any size in, HSM means high productivity cutting.
? Components shape becomes more complex, high-speed cutting will become increasingly important.
? Now, high-speed cutting machine is mainly used on the taper 40.
For more information on high-speed cutting, mold making, see Application Note C-1120: 2. See application guide mold C-1120: 2.
21) high-speed cutting goal?
The main goal of cutting speed is high productivity to reduce production costs. It is mainly used in finishing processes, are often used for machining hardened tool steel. Another goal is to shorten the production time and delivery time to improve overall competitiveness.
The main factor to achieve these objectives are:
? Time (less the number) clamping of the mold.
? By cutting the mold geometry to improve accuracy, while reducing manual labor and reduce tryout time.
? Use CAM systems and programming for the workshop to help develop technology plans, technology plans to raise through the utilization of machine tools and workshop.
For more information on high-speed cutting, mold making, see Application Note C-1120: 2. See application guide mold C-1120: 2.
22) high-speed cutting of the actual strength?
Tool and the workpiece can maintain a low temperature, which in many cases, extend tool life. On the other hand, high-speed cutting applications, the cutting volume is light, the cutting edge of the knife to eat very short. This means that feed faster than the heat propagation time.
Low cutting forces to be small and consistent tool bending. This process required for each tool and a combination of constant allowance is efficient and safe processing of one of the prerequisites.
As the typical high-speed cutting is shallow depth of cut, tool and low radial force on the spindle. This reduces the spindle bearings, ball screw and guide wear. High-speed cutting and axial milling is also a good combination, its impact on small spindle bearings, using this method you can use a long tool overhang and little risk of vibration.
Small parts of the high-productivity machining, such as roughing, semi finishing and finishing, in the total material removal rate is relatively low, have a good economy.
High-speed cutting can be obtained in the general finishing high productivity, excellent surface quality available. Surface quality often less than Ra0.2um.
High-speed cutting, the cutting of thin-walled parts as possible. High-speed cutting, eating knife a short time, reduce the impact and bending.
Improve the accuracy of the mold geometry, assembly is easy and faster. Whatever the people, skills, how, access to CAM / CNC production of surface texture and geometric precision. If cutting the time spent slightly more time-consuming manual polishing work can be significantly reduced. Often can be reduced up to 60-100%
Some processing, such as quenching, electrochemical machining and electrical discharge machining (EDM), can be greatly reduced. This can reduce investment costs and simplify logistics. Instead of using EDM machining (EDM), mold and quality of life improved.
PRM Industry is a highly professional Plastic, Rubber and Metal product manufacturing group. We specialize in providing our customers the integrated solutions of plastic, rubber and metal products. With more than 30 years manufacturing experience, we have been doing, and we also own the capabilities to do, is listening to what our customers need and supplying them the best solutions.
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