Photo-engraving, engraving and polishing of steels for DIEVAR molds
Photo-engraving of steels for DIEVAR molds
The low residue content of DIEVAR tool steels makes them particularly suitable for photoengraving. Due to the **corrosion resistance** of DIEVAR tool steels, it is imperative to use an exceptional photo-etching process. This feature is also known by photoengraving companies.
Polishing of DIEVAR tool steels
DIEVAR heat-treated and quenched tool steels are **polished. But the polishing method is only a little different from other ASSAB steels. The key criterion is that the Swedish DIEVAR molds, in which multiple processes are used depending on m and polishing, do not have to be polished on very irregular surfaces. However, when polishing, it is important to stop polishing as soon as the scratches from the last polishing process have been removed**.
Cold drawn DIEVAR mold steel
Cold drawing is the deformation of a flat metal part at an axial angle. Drawing generally refers to deep drawing, where the drawing is deep* up to half of its straight length. ASSAB's product portfolio strategy features a wide selection of cold drawn steels to maintain the overall goal of low-cost manufacturing** and work efficiency.
Handling cold DIEVAR tool steel.
1) Cold soil stress handling situation.
For different levels of steel talent, after cold drawing, DIEVAR steel mold for the application of prestressed steel talent, have to use ground tension manipulation of cold drawing. But the steel only after cold drawing by the check, the highest cold drawing rate * outside the standard standard value, but also to carry out the chemical energy test again.
(2) cold drawing rate handling standards.
To control the cold drawing rate of steel before cold drawing, Hengli DIEVAR die steel, DIEVAR die steel control value to be clarified by experiment. Experimental measurement arrangements: the same furnace with the same batch of measurement specimens, no **4, each specimen should be measured in accordance with the standard requirements of the cold drawing ground voltage relative to the drawing rate in cold, and take the average value of the sample to make for the furnace the actual cold drawing rate of the steel batch. If the strength of the steel is high, the average value of the cold drawing rate is less than 1% dievar is what the quality of the mold steel, in the steel before cold drawing, still according to 1% of cold drawing rate control.
(3) Not the same batch of cold drawing kiln handling.
For doping, divided into the steel talent uncle kiln batch, dievar cold drawing is what the quality of the mold steel, can not be used to control the cold drawing rate, and to cold draw more than a connected steel talent, DIEVAR steel mold each cold drawing rate and ground stress handling must meet the requirements of the requirements.
(4) Manipulation of cold drawing rate.
In order for the steel to have sufficient deformation, but also moderate manipulation of the cold drawing rate, generally at {{0}},5 - 1,0 is suitable. In addition, DIEVAR cold drawing steel mold to the required ground voltage and cold drawing rate, followed by stopping pulling after 2 - 3, DIEVAR cooling steel mold, and then releasing the pressure only bar, cold drawing finish, DIEVAR mold steel heat treatment, in order to give the steel enough time to deform.
(5) cold extraction control measures.
Cold drawing with only cold drawing rate or manipulation of cold drawing bottom tension is called single control, cold drawing rate and cold drawing bottom tension in addition to the use of Cold drawing is called double control switch. Choosing single control, the construction of DIEVAR mold steel project is simple and convenient. But for the material is not proportional to the steel only dievar is what the quality of the mold steel, it is not likely to root by root experiment, time and material, it is not likely to do that, some of the same steel only the cold drawing rate is not the same) the cold drawing quality lost to ensure. The double control switch system avoids this problem. When cold drawing, DIEVAR hardness of mold steel, for soil stress manipulation has already been done, cold drawing rate not * outside the control value, can feel to meet the standard. However, if the cold drawing rate has been achieved for a long time, and the cold drawing ground stress has not reached the manipulated ground stress, this type of steel to reduce the application of compressive strength. For prestressed steel you only need to choose the double control switch method.
DIEVAR tool steel is a high-alloy high-carbon, high-vanadium* high-alloy steel manufactured using the ASP powder metallurgy process. The steel is atomized with metal powder, compacted and hot molded to the desired size. The homogeneous organization gives it an *exceptional* combination of properties.
Chemical composition
%: C: 2,03Si: 4,0Mn: 7.0Cr: 6.5Mo: 10.5V: 6.5
Characteristics of DIEVAR mold steel
Good grinding properties
Good dimensional stability in heat treatment
Good resistance
Very good red hardness
Very good ** properties
DIEVAR Tool Steel Applications
DIEVAR tool steels are particularly suitable for single-edged tools where high capacity and hardness of the steel are required.
These tools are end mills, cutting turning tools, forming tools, cold work tools, and tools for machining difficult materials.
The machinability of ASP60 in the annealed state is low, but if tool manufacturing allows, ASP60 will perform well in the final tool. Some examples are milling cutters, cutting tools with simple but long-lasting shapes* or simple cold work tools.
Special properties of ASSAB DIEVAR tool steel
DIEVAR tool steels can achieve very high hardness and red hardness, and in addition, DIEVAR tool steels have the advantage of good dimensional and shape stability during the hardening process, like other ASP steels. In addition, it has the same hardness regardless of size. Machinability** Other high speed steels. Grinding properties are better than other high-alloy HSS, but slightly inferior to ASP30.
