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Technology is constantly evolving So, look for more alternatives that are competitive with coatings

 dies

The making of punches, forming tools, dies and other tools is usually described as a procedure of brutal force. This allows for a piece to be pierced, cut and shaped, or in different form. They are also referred to as "chipless" machine. Today's buyers of tool/die and machinists need to be more aware of the properties of the bare steel used to make the blank. They must understand the interplay with the entire process: design of the tooling and making raw materials for the tool, processing and heat treating the coating's properties, the materials that can be machinable and cycles, cycle times required, allowed machine downtime, the process of heating and processing for tooling.

Coating Benefits of Punches and Dies

Based on the needs of your project, ACS can offer a range of PVD coatings that enhance the value and decrease costs for punches, dies, and the tools for forming. First, the combination high film hardness and low friction coefficients impart positive properties to:

Reduction in friction from sliding

Resistance to wear and tear from abrasive substances

reduced punch & die retraction forces

More surface hardness and toughness

upgraded tablet tablet release by tablet punches

decreased galling, adhesive wear, & material pick up

Eliminated reaction to material due to a level of chemical inertness

The improvements have to be made while maintaining the crucial dimensions, tolerances, and punches that dies as well as forming instruments require when in use. This is the reason PVD is so useful in the creation of functional surfaces.

EXTEND YOUR LIFEESPAN OF DIES and PUNCHES. TOOLS

When coated with PVD thin-film coatings, dies, punches and other forming tools will have a significantly longer life span. The Platit Arc Deposition Systems allow for full control of deposition temperatures ranging from 160oC to 490oC. These temperatures are ideal for many of the water, oil, or air hardening steels such as S1, S7 A2, D2 W1, D3, O1 and O2, M1 & M2 T1, M4420SS and different alloys, and powdered metals that are used for the manufacture of carbide dies and other tools for forming, as well as materials such as tungsten carbide.

PVD VS CVD COATING

PVD is superior over CVD for coating punches, dies and forming tools. This is due to the fact that PVD utilizes lower temperatures during processing to preserve the austenitizing and hardness of heat-treated materials as well as the heat treatment of some forming tool substrate material.

TIGHTER TOLERANCE

Since PVD can offer coating thicknesses that range from 1 to 5 um range (0.00004" between 0.00004" and 0.00020"), parts can be machined to final dimensions prior to coating permitting the resulting clearances required in close tolerance punch and die applications.

INCREASE WEAR RESISTANCE

"Wear" is defined as a way to measure the impact of abrasion and rust during contact with other substances like grit or tools. "Toughness" is defined as a punch or die's or tool's resistance to cracking, breaking, or chipping during use. The materials used to make a punch will have characteristic wear and toughness values. The materials are available in the following varieties:

High wear resistance, low wear resistance and toughness

Toughness and wear resistance that is balanced

Low wear resistance and high wear resistance. toughness

The particular forming process will determine the material to select. Wear resistance can also be affected by the degree of hardness and coatings that are applied to the tool.

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