Manufacturing method of auto tire mold

Abstract

The invention discloses a manufacturing method of an auto tire mold. The manufacturing method comprises the following steps that (A), the mold molded face is designed through a combination method of CAD and CAE; (B), materials are prepared, specifically, the raw materials are weighed and prepared from the raw materials including, by weight, 60-65% of Al, 5-10% of Cr, 2-3% of Si, 3-4% of Cu, 5-9% of Fe, 0.5-1.0% of Mn, 1-2% of Zn, 1-3% of Mg, 0.5-1.0% of Ni, 1.0-3.0% of Sn, 0.1-0.13% of Ti and 0.1-0.18% of Pb; and (C), smelting is conducted, specifically, the prepared raw materials are added into a smelting furnace, the temperature of the smelting furnace is controlled to be 850-900 DEG C, and after complete smelting, the temperature falls to 650-700 DEG C. According to the manufacturing method of the auto tire mold, the chromium content in the mold materials is increased; through increasing of the chromium content, electrode potential of iron in mold steel and corrosion resistance can be improved; and meanwhile, alloy molten aluminum is poured into a fabrication mold cavity in a double-layer pouring way side pouring mode, so that smooth and steady mold filling and the good feeding effect are achieved, the technical requirements of air impermeability and electrical conductivity of a produced conductor casting are simultaneously met, and the service life of the mold is remarkably improved.

Description

technical field [0001] The invention relates to an automobile, in particular to a method for manufacturing an automobile tire mold. Background technique [0002] Aluminum alloy is a light alloy material. Due to its high strength and atmospheric corrosion resistance, it has become the preferred material for many mechanical parts. The density of pure aluminum is small (ρ=2.7g / cm3), which is about that of iron. 1 / 3, low melting point (660°C), aluminum is a face-centered cubic structure, so it has high plasticity (δ: 32-40%, ψ: 70-90%), easy to process, and can be made into various profiles, Plates have good corrosion resistance; but the strength of pure aluminum is very low, and the σb value in the annealed state is about 8kgf / mm2, so it is not suitable for structural materials. Through long-term production practice and scientific experiments, people have gradually strengthened aluminum by adding alloying elements and using heat treatment, which resulted in a series of aluminu...

AI Technical Summary

Problems solved by technology

[0004] Existing automobile tire molds are basically made of aluminum alloy die-casting. However, during the production process of die-casting parts, due to mold damage (fracture, wear, cracking, corrosion, plastic deformation, etc.), production stops and parts The decline in pass rate is getting worse and worse, causing a lot of waste of manpower and material resources

Therefore, the low service life of alloy molds has become the main reason for the high cost of die casting production