When steam oxidation treatment is applied as a surface treatment process to hot work die steel, a protective blue Fe3O4 film can be formed on the surface of the steel material, which has high temperature resistance, oxidation resistance, compactness and wear resistance. , corrosion resistance, good bonding strength with the substrate, favorable lubrication and so on. It can improve the hot and cold fatigue resistance of the mold and the hot melt resistance of the molten aluminum alloy. The hot work die is slightly oxidized prior to use, typically by heating to 500 ° C in air for 1-2 hours to produce an oxide layer of 1-10 μm on the mold surface.
The mold steel is oxidized under different oxidizing atmosphere, steam pressure, temperature and holding time to obtain surface oxide film. The ratio of Fe3O4 and Fe3O3 components is different. The thickness, density, thermal fatigue resistance and melting resistance of the whole oxide layer are obtained. And soldering performance is also different. Appropriate oxidation process is adopted for the aluminum alloy die-casting mold to obtain the optimal comprehensive performance, which has high practical application value.
Main features technical performance
1. Significantly improve the hot melt resistance of aluminum alloy die-casting mold
2, significantly improve the service life of aluminum alloy die-casting mold
3. Improve the thermal fatigue resistance of aluminum alloy die-casting molds
Technical indicators
1. Oxide film thickness ≈3μm
2. Oxidation film is brittle (microscopic indentation method to observe oxide film rupture)
3. Anti-melting performance after mold oxidation treatment (the heat-melting loss of the mold in molten aluminum liquid is heavier, about 1 time less than the treatment without treatment)
Size:
Outer Diameter: 1/8"-36"(10.3mm-914.4mm)
Wall Thickness: 1.0mm-20mm
Length: Random Length,SRL,DRL(4-14M)
Steel Grade:
A53 Gr. A, Gr B, A106 GR.A GR.B A333 GR1 GR3 GR6
End:pland ends beveled ends
Surface: Bare, Black,Lightly oiled, Hot dip galvanized,, Varnish coating/Anti rust oil, Protective Coatings, 3PE
Packing:Nude, Plastic/steel plugs in both ends, Hexagonal bundles of max. 2,000kg with several steel strips, Two tags on each bundle, Wrapped in waterproof paper, PVC sleeve, and sackcloth with several steel strips, Plastic caps.
| ASTM A53 /A106 Chemical Components and Machanical Property | |||||||||||||
| Standard | Steel Grade | Chemical Components | Machanical Property | ||||||||||
| C | Mn | P | S | Cu | Ni | Cr | Mo | V | Tensile Strength (Mpa) | Yield Strength(Mpa) | Elongation (Mpa) | ||
| ASTM A53 | A | ≤0.25 | ≤0.95 | ≤0.05 | ≤0.045 | ≤0.40 | ≤0.40 | ≤0.40 | ≤0.15 | ≤0.08 | ≥330 | ≥205 | ≥29.5 |
| B | ≤0.30 | ≤1.20 | ≤0.05 | ≤0.045 | ≤0.40 | ≤0.40 | ≤0.40 | ≤0.15 | ≤0.08 | ≥415 | ≥240 | ≥29.5 | |
| Standard | Steel Grade | Chemical Components | Machanical Property | ||||||||||
| C | Si | Mn | P | S | Cu ,Ni | Cr | Mo | V | Tensile Strength (Mpa) | Yield Strength(Mpa) | Elongation (Mpa) | ||
| ASTM A106 | B | ≤0.30 | ≥0.10 | 0.29-1.06 | ≤0.035 | ≤0.035 | ≤0.40 | ≤0.40 | ≤0.15 | ≤0.08 | ≥415 | ≥240 | ≥30 |
| C | ≤0.35 | ≥0.10 | 0.29-1.06 | ≤0.035 | ≤0.035 | ≤0.40 | ≤0.40 | ≤0.15 | ≤0.08 | ≥485 | ≥275 |
≥30 |
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