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Heat treatment process of mowing blade

A process and blade technology, applied in the field of mowing blade heat treatment process, can solve the problems of high labor intensity, blade cracking, and high equipment cost, and achieve the effects of improving strength, enhancing surface wear resistance, and sharp, strong and durable blades.

Inactive Publication Date: 2018-03-09
李楠
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the face of complex lawns or fields, especially where there are a lot of stones and tree roots, the blades used in the past are no longer sharp, and the blades crack, resulting in high labor intensity and high equipment costs.

Method used

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Embodiment Construction

[0014] The present invention will be described in detail below.

[0015] The invention provides a heat treatment process for mowing blades, the material of which is 1Cr13 steel, including chemical composition: carbon: less than or equal to 0.15; manganese: less than or equal to 1; silicon: less than or equal to 1; chromium: 11.50-13.50; phosphorus: less than or equal to 0.030; Sulfur: less than or equal to 0.030; others: less than or equal to 0.60; the heat treatment process includes the following steps:

[0016] a1 Normalizing treatment: When the workpiece is heated in the furnace to a temperature of 727-912°C, it is kept for 10-20 minutes. After the workpiece is released from the furnace, it is naturally cooled in the air, so that the grains are refined and the distribution of carbides is uniform, and the material is removed. Internal stress stabilizes the size of the workpiece and prevents deformation and cracking;

[0017] a2 Quenching and tempering treatment: When the wo...

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Abstract

The invention provides a heat treatment process for mowing blades, and the heat treatment process includes the following steps: a1 normalizing treatment: when the workpiece is heated in a furnace to a temperature of 727-912°C, it is kept for 10-20 minutes, and the workpiece is placed in the air after it is released from the furnace Natural cooling; a2 quenching and tempering treatment: when the workpiece is heated in the furnace to a temperature of 927-1000°C, keep it warm for 10-30 minutes, and put the workpiece in oil to cool after it comes out of the furnace; a3 carbonitriding: the workpiece is first heated in the furnace Heat to a temperature of 900-950°C, then cool down to 500-570°C after carburizing, keep warm for 1-2 hours, and cool with oil after being out of the furnace; a4 passivation treatment: the workpiece is placed in a passivation solution and heated to a temperature of 30-40°C When soaking for 3‑20 minutes or longer. The heat treatment process of the mowing blade of the invention improves the strength, hardness and toughness, enhances the wear resistance of the surface, and makes the blade sharp, firm and durable.

Description

technical field [0001] The invention relates to a blade heat treatment process, in particular to a grass mowing blade heat treatment process. Background technique [0002] The mowing blade is used for mowers to trim lawns, vegetation, etc. It is composed of a fixed ring, a knife body, and a blade. The fixed ring is used to be installed on the rotating shaft, and the motor rotates to drive the blade to rotate at a high speed, which saves the working time of the weeding workers and reduces a lot of human resources. However, in the face of complex lawns or fields, especially where there are a lot of stones and tree roots, the blades used in the past are no longer sharp, and the blades crack, resulting in high labor intensity and high equipment costs. Contents of the invention [0003] 【1】Technical problems to be solved [0004] The technical problem to be solved by the present invention is to provide a high strength, high hardness and good toughness, sharp, strong and durab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D9/18C23C8/32C23C22/00
CPCC21D9/18C23C8/32C23C22/00
Inventor 李楠
Owner 李楠
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