Drawing Products
Applied Polytech provides various carbide material solutions for different applications to achieve longer service life, better stability and higher efficiency :
- AP-7K series: dry drawing material such as high carbon steel, steel cord, sawing wire
- AP-7U series: wet drawing material such as steel cord and sawing wire
We offer 200 standard specifications and other customized specifications:
- Standard microporous wire drawing die
- Standard large/medium drawing die
- Customized wire and tube drawing die
WHAT WE ARE OFFERING
Series | Grade | Hardness (HRA) | Density (g/cm3) | TRS (MPa) | Grain Size (µm) | Application recommended |
|---|---|---|---|---|---|---|
AP-7K | 7K05 | 91.5-92.5 | 14.80-15.00 | 2720 | 1.5 | Good wear resistance and high hardness. It is suitable for dry drawing of steel cord, high-carbon steel and non-ferrous metals. |
AP-7K | 7K05A | 92.0-93.0 | 14.80-15.00 | 2450 | 1 | Good wear resistance and high strength. It is suitable for wet drawing of steel cord, high carbon steel, dry drawing of steel cord, high carbon steel and welding wire. |
AP-7K | 7K05C | 91.6-92.6 | 14.85-15.05 | 2800 | 1.3 | Special grade for CVD substrates |
AP-7K | 7K10X | 91.8-92.8 | 14.90-15.10 | 2420 | 1 | High temperature abrasion resistance, high strength, suitable for dry drawing in the high-end wire market. |
AP-7K | 7K30H | 89.7-90.7 | 14.65-14.85 | 2400 | 2 | Good wear resistance and high hardness. Suitable for cold drawing of bars, pipes and large-size profiles. |
AP-7U | 7U10 | 92.5-93.5 | 14.80-15.00 | 2700 | 0.8 | High hardness and good wear resistance. Suitable for wet drawing of high carbon steel, welding wire and dry drawing of high carbon steel, welding wire and non-ferrous metal. |
AP-7U | 7U20 | 91.3-92.1 | 14.30-14.50 | 3500 | 0.8 | Good toughness, relatively low hardness, suitable for wear-resistant parts in the pull-out industry. |
AP-7U | 7U10UF | 93.5-94.5 | 14.65-14.85 | 3500 | 0.4 | It has high hardness and excellent wear resistance. It is suitable for wet drawing of steel cord, cutting steel wire, high carbon steel and welding wire. |
TECHNICAL GUIDE
Ⅰ Entrance zone: drawing materials enter the dies through this area.
Generally, it is an arc in order to avoid drawing materials scratched by the dies.
Ⅱ Lubrication zone: it is for lubricant storage and drawing material
lubrication which is conducive to smooth drawing.
Ⅲ Working zone: it is a plastic deformation zone for metal drawing which
key dimension is length and angle. Smaller length will make drawing metal
cause more pressure to working zone. This will significantly increase the
tensile stress and accelerate the wearing of the dies which will influence
drawing effect. Working zone length differs in different drawing material,
diameter and lubrication.
The selection principles are:
1) the length should be shorter in drawing soft metal wire compared to drawing hard metal wire;
2) the length should be shorter in drawing small diameter wire compared to drawing big diameter wire;
3) the length should be shorter in wet drawing compared to dry drawing.
Working zone angle: bigger angle will increase the tensile strength and the hardness of drawing material while will decrease the bending and torsion. Working zone angle should be smaller in drawing steel while it should be bigger in drawing non-ferrous metal and carbide
Ⅳ Cylinder length: drawing material gets its final size through cylinder length. Cylinder length differs in different hardness, section and lubrication of the drawing material. If cylinder length is too big, it will increase the friction which heightens the die temperature and then influences the die life. It will also increase the tensile stress which causes the rising of shrinkage rate and breakage rate in drawing as well as powder consumption; if cylinder length is too short, working cone changes will affect finished size in drawing. Generally,
1) cylinder length is shorter in drawing soft metal material compared to drawing hard metal material;
2) cylinder length should be shorter in drawing small diameter wire compared to drawing big diameter wire;
3) cylinder length should be shorter in wet drawing compared to dry drawing.
Ⅴ Outlet zone and outlet angle: outlet zone is the last part where drawing material leaves from the dies. It is to protect the cylinder length from cracking. Outlet zone should not be too short, otherwise the outlet will be easily broken; outlet angle means to ensure that drawing metal will not scratch outlet zone and influence the wire quality; during adjusting the dies the sharp part connecting outlet zone and cylinder length must be ground to be an arc in order to avoid the wire scratched when passing through the dies.