Wear-resistant Tungsten-containing Austenitic Manganese Steel Preparation Methods

The present invention provides a method for preparing wear-resistant tungsten-containing austenitic manganese steel, which is characterized by:

1) The chemical composition of steel as wt%: C1.0-1.5, Mn5.0-15.0, W0.5-5.0, Si <0.8, S <0.05, P <0. 05, the balance being Fe;

2) Conventional mechanical properties of cast steel is: tensile strength 500-900MPa, impact toughness 20-200J / cm2, which cast the state of the mechanical properties of conventional steel is less than state of the mechanical properties of solution heat treatment of steel; their Abrasive 30-80% performance increase abrasion than ordinary ZGMn13 steel;

3) The mechanical properties of conventional steel forging state: yield strength greater than 650MPa, tensile strength greater than 1000MPa, impact toughness greater than 200J / cm2, wear resistance than the same ingredients without forging steel increased by more than 50%;

Steps are as follows:

a) Smelting furnace, its steel smelting temperature of 1520-1550 ℃;

b) Pouring temperature 1460-1480 ℃;

c) While smelting, iron alloy by adding after the first order is: tungsten iron and ferromanganese, and then pouring into the desired product; smaller thickness castings can be used directly after casting, casting for a greater thickness after heat treatment required to use heat treatment process is the heating temperature 950-1100 ℃, water quenching;

d) Wear-resistant tungsten-containing austenitic manganese steel forging process with excellent performance, the forging process is: heating rate of not more than 200 ℃ / h, forging temperature range of 900-1180 ℃.

Wear-resistant tungsten-containing austenitic manganese present invention describes for the production of metallurgy, mining, building materials, coal, military and machinery industries wearable parts such as liners, tooth plate, hammer and crawler boards. Meanwhile, wear-resistant tungsten-containing austenitic manganese steel forging process with excellent performance, available forging method of manufacturing abrasion resistance, excellent fatigue properties contact forgings, such as railway frog, hammer and so on.




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