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Method for integrally forging combined bow-shaped rake

An integral forging and bow-shaped technology, which is applied in household utensils, knives, applications, etc., to achieve superior tensile strength and increase material density

Active Publication Date: 2011-09-21
TANGSHAN SHUSHI HARDWARE TOOLS MFR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention aims to solve the product defects caused by the material and processing method of the existing garden tool rake head, and provides a method for integrally forging conjoined bow-shaped rakes with 65Mn steel as the material

Method used

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Embodiment Construction

[0014] The present invention is described in detail below in conjunction with embodiment.

[0015] This embodiment is a production method of a fourteen-tooth conjoined bow-shaped harrow, and its steps are as follows:

[0016] (1) 65Mn steel is selected as the steel billet for the rake head. The specifications of the steel billet are: length 590 mm, width 100 mm, thickness 8 mm.

[0017] (2) Send the billet of the rake head into the gas heating furnace, heat it above 1000°C, and then use 1600 kN pneumatic stamping equipment to stamp and form the rake teeth as a whole, and reserve the bow-shaped handles on both sides of the rake teeth for material preparation.

[0018] (3) Enter the gas heating furnace for the second time, heat up to above 900°C, and prepare the material for the bow handle for forging.

[0019] (4) Use high-frequency heating equipment to heat up to above 1000°C for the third time, and use D-320 roll forging equipment to roll forge and stretch the bow-shaped sha...

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Abstract

The invention relates to a method for producing a rake head as a gardening tool, in particular to a method for integrally forging a combined bow-shaped rake which is made of 65Mn steel. The method comprises the steps of: sending a rake head steel blank into a heating furnace for heating to above 1000 DEG C, integrally punching and forming rake teeth by using a punching device, and reserving bow-shaped handle stocks at two sides of the rake teeth; secondarily sending into the heating furnace for heating to above 900 DEG C, and forging the bow-shaped handle stocks; thirdly heating to above 1000 DEG C by using a high-frequency heating device, and roll-forging and drawing the bow-shaped handle stocks until the length of the bow-shaped handle stocks reaches the length of half of a bow-shaped handle at most by using a roll-forging device; fourthly heating to above 900 DEG C, synthesizing the bow-shaped handle stocks at two sides of the rake teeth by using a bending machine, then welding, reinforcing and forming the bow-shaped handle; fifthly heating to above 900 DEG C, forming radian of the rake teeth by using the punching device; and cleaning the surface of a rake body, baking finish and spraying. The bow-shaped rake produced by adopting the method has more excellent property, flexibility, elasticity, tensile strength and the like, and can not have phenomena such as deformation, breaking and the like during the use.

Description

[0001] Technical field: [0002] The invention relates to a production method of a harrow head of a garden tool, in particular to a method of integrally forging a conjoined bow-shaped harrow. Background technique: [0003] The known garden tool harrow is formed by stamping and welding in separate parts. In addition to material problems, this kind of product also has problems in the processing method, so that the rake teeth are easy to deform during the use of the rake head, and the connection between the bow handle and the rake body is easy to break and other problems. Invention content: [0004] The invention aims to solve the product defects caused by the material and processing method of the existing garden tool rake head, and provides a method for integrally forging conjoined bow-shaped rakes with 65Mn steel as the material. [0005] The technical solution adopted by the present invention to solve the above problems is: [0006] A method for integrally forging conjoi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00B21K11/00
Inventor 王永军
Owner TANGSHAN SHUSHI HARDWARE TOOLS MFR
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