Air quenching method of circular saw web

An air quenching, circular saw blade technology, applied in the field of heat treatment, can solve the problems of large deformation and cracking tendency of materials, difficult cooling speed control, poor temperature uniformity, etc., and achieves low auxiliary costs, large cooling speed adjustment range and low cost. Effect

Active Publication Date: 2017-02-22
RIZHAO HEIN SAW
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cooling speed of oil bath and salt and alkali bath is fast, but the cooling speed of each part in the quenching process of the material cannot be precisely controlled, resulting in poor temperature uniformity, difficulty in controlling the cooling speed, and a large tendency of deformation and cracking of the material. At the same time, the salt bath furnace Quenching and tempering corrode the surrounding environment and equipment. It is not suitable for modern industries with high environmental protection requirements, and the operation is also relatively complicated.

Method used

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  • Air quenching method of circular saw web
  • Air quenching method of circular saw web
  • Air quenching method of circular saw web

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] As shown in the figure, a saw blade air quenching device is characterized in that: the lower pressure plate 2 is installed in the lower support seat 1, the upper pressure plate 4 is installed in the upper support seat 5, and the upper pressure plate 4 and the lower pressure plate 2 There are annular diversion grooves 13 and nozzles 14, air inlets 16 at both ends of the upper and lower pressure plates, air chambers 15 inside the upper and lower pressure plates, hydraulic guide columns 6 around the lower pressure plate 2, and upper support The seat 5 reciprocates up and down along the hydraulic guide column 6 through the hydraulic pump 12, the air enters the gas pipe 11, the gas valve 10 can adjust the gas flow, the water enters from the liquid pipe 9, the water valve 8 can control the water flow, and the air and water enter the atomization Atomized gas is formed after the valve 7, and enters the pressure plate from the air pipe 3.

[0058] Working process of the present ...

Embodiment 2

[0065] An air quenching device for circular saw blades, comprising: a frame, upper and lower pressure plates 2, 4, upper and lower pressure plates 2, 4 that can reciprocate up and down are arranged symmetrically on the frame, and the upper and lower pressure plates 2, 4 are symmetrically arranged on the frame. The pressure plates 2 and 4 are respectively provided with air cavities 15, and nozzles 14 are evenly distributed in the upper and lower pressure plates 2 and 4, and the nozzles 14 communicate with the corresponding air cavities, and the air cavities are respectively connected to the air intake pipes. connected.

Embodiment 3

[0067] An air quenching device for circular saw blades, comprising: a frame, upper and lower pressure plates 2, 4, upper and lower pressure plates 2, 4 that can reciprocate up and down are arranged symmetrically on the frame, and the upper and lower pressure plates 2, 4 are symmetrically arranged on the frame. The pressure plates 2 and 4 are respectively provided with air cavities 15, and nozzles 14 are evenly distributed in the upper and lower pressure plates 2 and 4, and the nozzles 14 communicate with the corresponding air cavities 15, and the air cavities 15 are respectively connected to the inlet Air pipe 11 is connected.

[0068] The upper and lower pressure plates 2 and 4 are also provided with annular guide grooves 13 respectively.

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Abstract

The invention relates to an air quenching method and device of a circular saw web. A rack, an upper press plate and a lower press plate are included. The upper press plate and the lower press plate capable of doing up-and-down reciprocating motion are symmetrically arranged on the rack. The upper press plate and the lower press plate are each provided with an air cavity. Nozzle openings are evenly distributed in the upper press plate and the lower press plate and communicate with the corresponding air cavities. The air cavities are connected with an air inlet pipeline. In the whole quenching process, the manner of gas and gas-liquid atomization gas alternative cooling is adopted, by means of the characteristic of the low and adjustable cooling speed of air media and atomization gas, deformation cracks of the saw web in the quenching process are greatly reduced, and the performance quality of the saw web is improved; and meanwhile, the whole quenching process is clean, no waste gas is generated, the surface does not need to be cleaned after the saw web is quenched, and the requirement of green production is met.

Description

technical field [0001] The invention belongs to the field of heat treatment, and in particular relates to an air quenching method and device for a circular saw blade. Background technique [0002] As one of the important links in the heat treatment process, the quenching process plays an important role in the development of material properties, reduction of residual stress and surface deformation. [0003] At present, the commonly used quenching methods for circular saw blades mainly include oil quenching, salt and alkali bath quenching, etc. The cooling speed of oil bath and salt and alkali bath is fast, but the cooling speed of each part in the quenching process of the material cannot be precisely controlled, resulting in poor temperature uniformity, difficulty in controlling the cooling speed, and a large tendency of deformation and cracking of the material. At the same time, the salt bath furnace Quenching and tempering corrode the surrounding environment and equipment,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D9/24C21D1/667
CPCC21D1/667C21D9/0062C21D9/24
Inventor 曹永张进生张百年高丽君伊丽娜
Owner RIZHAO HEIN SAW
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