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Setting method in sections of high alloy steel vacuum heat treatment high-temperature region parameters
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A vacuum heat treatment and high-alloy steel technology, applied in heat treatment equipment, heat treatment process control, manufacturing tools, etc., can solve the problems of slow heating speed, prolonged holding time, difficult heat treatment process parameters, etc., and achieve small quenching stress and high red hardness , Reduce the effect of heat treatment distortion
Active Publication Date: 2014-11-26
昆山鑫昌泰模具科技有限公司
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Because vacuum heating mainly relies on radiation heating, compared with conventional heat treatment furnaces, the heating speed is slow and the holding time is correspondingly prolonged, which brings difficulties to the setting of heat treatment process parameters
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Embodiment 1
[0016] Set the final heating temperature of SKD61 to 1030°C, and the total holding time in the high temperature zone is 110min, then:
[0017] (1) The first-stage heating temperature and first-stage holding time parameters in the high-temperature zone are set as follows:
[0031] Holding time: total holding time in high temperature zone × 80%, that is, 100min × 80% = 80min.
[0032] (2) The parameters of the second stage heating temperature and the second stage holding time in the high temperature zone are set as follows:
[0033] Heating temperature: 1300°C
[0034] Holding time: total holding time in high temperature zone × 15%, that is, 100min × 15% = 15min.
[0035] (3) Setting of heating time parameters between the first stage in the high temperature zone and the second stage in the high temperature zone:
[0036] The time required to raise the temperature from 1000°C to 1300°C: the total holding time in the high temperature zone ×...
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Abstract
The invention discloses a setting method in sections of high alloy steel vacuum heat treatment high-temperature region parameters. The method comprises setting of heating temperature of a high-temperature region first phase and first phase insulation time parameters, setting of heating temperature of a high-temperature region second phase and second phase insulation time parameters as well as setting of heating time parameters between the high-temperature region first phase and the high-temperature region second phase. The process method provides reasonable optimization on the heat treatment property values of the high alloy steel workpieces under the high-temperature region, the quenching stress of the high alloy steel workpiece decreases to minimum, heat treatment distortion amount of the workpiece is reduced, the performance of the material can be performed with maximum limit, so that the high red hardness and high wear resistance can be obtained, and good plasticity and toughness can be simultaneously obtained.
Description
technical field [0001] The invention relates to a method for setting parameters of heating temperature and holding time during heat treatment, in particular to a segmental processing method for the parameters of heating temperature and holding time in a high-temperature section of high-alloy steel during vacuum heat treatment. Background technique [0002] High-alloy steel usually refers to alloy steel with an alloy content higher than 10%, and generally includes high-speed steel, high-alloy die steel and stainless steel. Various high-alloy steel workpieces can be prepared from high-alloy steel, such as high-alloy steel tool workpieces and high-alloy steel mold workpieces. In the heat treatment process, since the vacuum heat treatment furnace has great differences and advantages compared with the conventional atmosphere (such as air) heat treatment furnace, the heating and cooling equipment used in the heat treatment process of high alloy steel has been widely used in the va...
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