Thermal treatment process for saw web

A saw blade and process technology, which is applied in the field of saw blade heat treatment process, can solve the problems of not meeting the flatness requirements of high-level saw blades, reducing the saw blade, etc., and achieve the effect of reducing the probability of deformation and improving the flatness

Active Publication Date: 2018-07-06
杭州双江工具制造有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

In the tempering stage, the deformation of the saw blade can be reduced to a certain extent by means of pressurization. However, since the quenched saw blade has already been formed for the first time, reducing the deformation of the saw blade by tempering often cannot reach the high-grade saw blade. flatness requirements

Method used

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  • Thermal treatment process for saw web
  • Thermal treatment process for saw web
  • Thermal treatment process for saw web

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1: A kind of saw blade heat treatment process, refer to figure 1 , including the following steps,

[0039] S1. Deburring the circular saw blade raw material to eliminate the artificial stress concentration area and provide preliminary preparation for flattening and tempering.

[0040] S2. Put the deburred saw blade into an oven to preheat to 250°C to 400°C, and then transfer it to a heating furnace for continuous heating to 830±10°C.

[0041] S3. Make the heated saw blade stay on the furnace surface for 3 seconds, and move it to the quenching liquid surface of the quenching tank to stay for 2 to 5 seconds. After completing the stay, insert it vertically into the quenching liquid until the temperature of the saw blade drops to MS point Within the above 10°C range, then take the saw blade out of the quenching liquid; when the saw blade is immersed in the quenching liquid, stop the flow of the quenching liquid to reduce the deformation effect of the quenching l...

Embodiment 2

[0050] Embodiment 2: The only difference from the embodiment is that the compaction mechanism 1, refer to image 3 and Figure 4 , The pressing mechanism 1 in the present embodiment includes a frame 11 on which an upper pressing plate 2, a lower pressing plate 3, and a driver 21 for driving the upper pressing plate 2 and the lower pressing plate 3 to move relative to each other are installed. The upper platen 2 is provided with an upper liquid guide channel 22, and the side wall of the upper platen 2 is connected with an upper feed pipe 51. The upper feed pipe 51 communicates with the initial end of the upper liquid guide channel 22. The feed pipe 55 , the upper discharge pipe 55 communicates with the end of the lower liquid guiding channel 31 . The end of the upper feed pipe 51 away from the upper platen 2 is connected to the first liquid storage tank 5 , and the end of the upper discharge pipe 55 away from the upper platen 2 is connected to the second liquid storage tank 6 ...

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Abstract

The invention discloses a thermal treatment process for a saw web, relating to the technical field of thermal treatment. As the saw web is easy to be greatly deformed in the quenching stage of an existing thermal treatment process for the saw web, the use quality of the saw web is directly influenced. According to the technical scheme, the thermal treatment process comprises the following steps: (S1) deburring; (S2) preheating the saw web, and continuously heating the saw web to 830+ / -10 DEG C; (S3) cooling the saw web in quench liquid to a temperature range from an MS point to a temperature 10 DEG C higher than the MS point, and then taking out the saw web; (S4) planishing and shaping the saw web, and simultaneously carrying out formation of martensite; and (S5) carrying out tempering onthe saw web. By virtue of the process, the flatness of the saw web can be controlled in the quenching state, so that the deformation amount of the saw web is reduced, and the saw web can meet the requirements on the flatness of high-grade saw webs.

Description

technical field [0001] The invention relates to the technical field of heat treatment, in particular to a saw blade heat treatment process. Background technique [0002] A saw blade is a general term for thin, circular knives used to cut solid materials. Saw blades are also divided into different quality grades according to different usage occasions, such as ordinary grade, decoration grade, professional grade, industrial grade, etc. For higher-level saw blades, there are higher requirements for their hardness, flatness, cracking and deformation resistance. In the existing production process, in order to improve various performances of the saw blade, heat treatment is often performed on the initial saw blade. The existing saw blade heat treatment process generally includes: quenching, medium temperature tempering, quenching is mainly to improve the hardness of the saw blade, and the main purpose of tempering is to remove the internal tissue stress of the saw blade, so as t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/20C21D1/607C21D9/24
CPCC21D1/20C21D1/607C21D9/24
Inventor 曹宝全
Owner 杭州双江工具制造有限公司
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