Method for quenching medium and low carbon alloy structural steel workpieces
A low-carbon alloy and steel parts technology, applied in the field of heat treatment and quenching, can solve the problem of low energy consumption, achieve the effects of overcoming high energy consumption, improving strength and toughness, and being easy to master
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[0016] Example one
[0017] According to an embodiment of the present invention, a quenching method for medium and low-carbon alloy structural steel parts is provided. In this embodiment, the quenching method of medium and low-carbon alloy structural steel parts includes:
[0018] Step 101: Place the medium and low-carbon alloy structural steel parts to be quenched in a quenching furnace for full power heating. When the furnace temperature is higher than the normal austenitizing temperature of 100-200°C, heat preservation is performed until the process Pieces burn through
[0019] In step 101, the normal austenitizing temperature includes: the normal austenitizing temperature of the hypoeutectoid steel is AC 3 +(30-50)℃, the normal austenitizing temperature of eutectoid steel and hypereutectoid steel is AC 1 +(30-50)℃; the holding time t is calculated according to the formula t=KD, where K is the holding time coefficient, K is 0.1-0.5min / mm, and D is the wall thickness of the workpi...
Example Embodiment
[0023] Example two
[0024] Different from the above embodiment, in this embodiment, the material of the part is ferrous metal containing medium and low hardenability materials such as 20SiMn2MoV, 35CrMo, 42CrMo, and 40CrNiMo, and the corresponding quenching liquid is a water-soluble polymer quenching liquid UCONA (English full name: UCON Quenchant A), the volume concentration of UCONA is 2-25%, the quenching intensity H is 1.5-4, in this volume concentration range adjustment, as the concentration increases, the quenching intensity decreases.
[0025] In this embodiment, UCONA is a water-soluble polymer quenching liquid produced by Union Carbide, which is suitable for heat treatment of ferrous and non-ferrous metals. It can be used in the heat treatment of small parts in mesh belt furnaces, suitable for various induction quenching and flame quenching, suitable for quenching methods such as spraying and dipping, such as gears, crankshafts, camshafts and other components, as well a...
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