Quenching and tempering treatment process of high-alloy steel track shoes of large-scale construction machinery
A high-alloy steel and large-scale engineering technology, applied in heat treatment furnaces, heat treatment equipment, furnace types, etc., can solve the problems of short track life, easy wear on the surface, high maintenance costs, etc., to achieve low cost, enhanced performance, and reduced maintenance cost effect
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Embodiment 1
[0023] Embodiment 1: as figure 1 As shown, a quenching and tempering process of high-alloy steel track shoes of large-scale construction machinery includes the following steps:
[0024] Step 1 Furnace heating: put the high-alloy steel track shoe casting into a heat treatment furnace with a furnace temperature of 200°C, the temperature rise rate is 80°C / h, and the temperature reaches 900°C for 6 hours.
[0025] Step 2 Put the high-alloy steel track shoe castings out of the furnace into the pool: put the high-alloy steel track shoe castings out of the furnace after heating and heat preservation, and quickly put them into the water pool. Shortening the cooling time of the product is beneficial to the phase transformation of the structure. Due to the time consumption of the operation, in order to ensure the structure of the casting, the time from the casting to the water should not exceed 80s. No more than 9 minutes, the high-alloy steel track shoe casting needs to be re-entered ...
Embodiment 2
[0033] Embodiment 2: A quenching and tempering treatment process for high-alloy steel track shoes of large construction machinery, comprising the following steps:
[0034] Step 1 Furnace heating: put the high-alloy steel track shoe casting into a heat treatment furnace with a furnace temperature of 250°C, and heat at a temperature of 100°C / h to 920°C for 8 hours.
[0035] Step 2 Put the high-alloy steel track shoe castings out of the furnace into the pool: put the high-alloy steel track shoe castings out of the furnace after heating and heat preservation, and quickly put them into the water pool. Shortening the cooling time of the product is beneficial to the phase transformation of the structure. Due to the time consumption of the operation, in order to ensure the structure of the casting, the time from the casting to the water should not exceed 80s. Within 9 minutes, the high-alloy steel track shoe casting needs to be re-entered into the heat treatment furnace, heated to 960...
Embodiment 3
[0041] Embodiment 3: A quenching and tempering treatment process for large-scale engineering machinery high-alloy steel track shoes, comprising the following steps:
[0042] Step 1 Furnace heating: put the high-alloy steel track shoe casting into a heat treatment furnace with a furnace temperature of 225°C, and heat at a temperature of 90°C / h to 910°C for 7 hours.
[0043] Step 2 Put the high-alloy steel track shoe castings out of the furnace into the pool: put the high-alloy steel track shoe castings out of the furnace after heating and heat preservation, and quickly put them into the water pool. Shortening the cooling time of the product is beneficial to the phase transformation of the structure. Due to the time consumption of the operation, in order to ensure the structure of the casting, the time from the casting to the water should not exceed 80s. Within 9 minutes, the high-alloy steel track shoe casting needs to be re-entered into the heat treatment furnace, heated to 93...
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