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Composite steel quenching process

A composite steel and process technology, applied in the direction of quenching device, improvement of process efficiency, manufacturing tools, etc., can solve the problems of non-continuous quenching operation and increased processing difficulty, and achieve the goal of lowering temperature, reducing production cost and improving collection efficiency Effect

Pending Publication Date: 2020-08-21
徐鹏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to make up for the deficiencies of the existing technology and solve the problems that the processing difficulty of steel bars after quenching is increased and the quenching operation cannot be carried out continuously, the present invention proposes a composite steel quenching process

Method used

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Embodiment approach

[0038] As an embodiment of the present invention, an airbag 18 is fixedly installed between the cutter block 17 and the cylinder 16; a water spray hole 171 is provided on the cutter block 17; the airbag 18 and the water spray hole 171 is connected, and a one-way valve is installed at the communicating place; a water pipe 181 is installed on the airbag 18; the end of the water pipe 181 is located below the liquid level of the quenching liquid in the quenching tank 1; the water pipe 181 is installed Has a one-way valve;

[0039] When working, when the cutter block 17 starts to cut the steel bar, the airbag 18 installed between the cutter block 17 and the cylinder 16 expands, and the airbag 18 absorbs the quenching from the quenching box 1 through the installed water pipe 181 After the cutting block 17 completes the cutting work and returns to the original position, the airbag 18 is squeezed so that the quenching liquid absorbed in the airbag 18 is sprayed from the water set on the ...

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Abstract

The invention belongs to the technical field of metal surface heat treatment, and particularly relates to a composite steel quenching process. The process comprises the following steps that S1: a steel bar with surface impurities removed is heated to 800-850 DEG C through an intermediate frequency induction heating furnace, the heat is preserved for 15 min, and then the steel bar is heated to 1100-1150 DEG C; S2: on the basis of step S1, the heated steel bar is conveyed into a quenching device through a conveyor belt I (8) for quenching; and S3: the quenched steel bar through step S2 is transported out of the quenching device through a conveyor belt II (81), and then the steel bar is cleaned and dried to obtain a finished product. According to the quenching process, the structure is simple, and the steel bar is quenched after heating and cutting, so that the effect of the improved performance after quenching on the cutting is avoided, and at the same time, continuous processing is achieved, and production efficiency is improved.

Description

Technical field [0001] The invention belongs to the technical field of metal surface heat treatment, and specifically is a composite steel quenching process. Background technique [0002] Quenching is to heat the steel to above the critical temperature, hold it for a certain period of time, and then cool it at a cooling rate greater than the critical cooling rate, so as to obtain an imbalanced structure dominated by martensite (or bainite or single-phase austenite can be obtained as needed. ) A heat treatment process method. Quenching is the most widely used process method in steel heat treatment. In the existing quenching process, most of the treatment of composite steel rebar is directly quenching. After quenching, the rebar is cut to the required specifications. However, this method has defects and the performance of the quenched rebar is greatly improved. , The cutting process is more difficult, the loss of cutting tools is accelerated, and the cost of production and use is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/42C21D1/74C21D1/18C21D1/667C21D9/00
CPCC21D1/18C21D1/42C21D1/667C21D1/74C21D9/0075Y02P10/25
Inventor 徐鹏汪宇波刘云峰
Owner 徐鹏
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