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Trumpf Bridge forming tool

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Product Abstract:

Bridge Forming Tool 1.Bridge width should be larger than 1.5 times plate thickness and bridge width should be larger than 1.8mm. 2.Program shoul reserve enough unloading time while using. 3.Tool is corresponding with plate thickness. Different plate thickness requires different tool. 4.We can desin single bridge, double bridge according to the min.distance between brdigh hole, and the forming top is flat surface.

Product Description

Bridge Forming Tool

1. Bridge width should be larger than 1.5 times plate thickness and bridge width should be larger than 1.8mm.

2. Program shoul reserve enough unloading time while using.

3. Tool is corresponding with plate thickness. Different plate thickness requires different tool.

4. We can desin single bridge, double bridge according to the min.distance between brdigh hole, and the forming top is flat surface.

5. If you need curved top surface on the forming top, please notice us in advance with written explaination.

6. Due to different plate plastic property, the forming height of the steel and alum plate should be 1.5 times plate thickness, and for stainless steel, the forming height is 2 times plate thickness.

7. For enlonged shape and thin plate, the bridge top will be a little concave after forming.

8. To coordinate with trumpf machine’s high-speed blanking, the lower die designed with rolling guide which will not scratch the plate.


For punch body, we produce it with SKH-51. It has another name of high speed steel. This is an alloy steel with complex composition. It includes tungsten, molybdenum, chromium, vanadium, cobalt and other carbide forming elements. The total amount of alloying element arrive to 10%-25%. On the condition of hot heat (around 500℃) that emerging with high-speed punching, it will keep high hardness and HRC can arrive above 60. This is also the main feature of high speed steel which is called red hardness. 


This material can make the toolings more durable and wear-ressistant which will cause a longer tooling life.


The die material we choose is Japanese imported special steel DC53, which is a new type tooling steel improved from SKD11. This material overcome the weakness of SKD11’s insufficient tempering hardness and toughness. The strength and hardness is excellent while doing heat treatment, HRC can arrive to 62-63.

DC53 steel’s toughness in cold die steel is more prominent. Tools made by DC53 will have little cracks and cracking which will greatly improve the tooling life.




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