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Welding forming method of wrench mold

A welding molding and mold technology, applied in the field of wrench molds, can solve the problems of mold scrapping and high price of hot mold steel, and achieve the effects of low manufacturing cost, long service life and improved service life

Inactive Publication Date: 2020-10-16
JIANGSU SHUNTIAN INT GRP JIANGDU TOOLS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, wrench molds generally use hot die steel materials, and the price of hot die steel is high
For the mold made of hot mold steel, the cavity is damaged every time and then processed by the machining center. The overall height after processing needs to be reduced. When the total height of the mold is lower than 50%, the mold will be scrapped

Method used

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  • Welding forming method of wrench mold
  • Welding forming method of wrench mold
  • Welding forming method of wrench mold

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Embodiment Construction

[0024] The invention is like Figure 1-3 Shown; a welding forming method of a wrench mold, which includes the following steps:

[0025] Step 1), blanking: select the material and size of the blank according to the requirements of the drawing to form the blank;

[0026] Step 2) Annealing: Put the billet in step 1) into an annealing furnace and heat it to a temperature of 800°C-900°C, keep it for 18 hours, and then cool it down in the furnace; the hardness of the billet after annealing is ≤229HB;

[0027] Step 3). Preliminary machining: Machining the blank material annealed in step 2) to achieve the required shape of the design; through machining, determine the shape of the final mold;

[0028] Step 4), quenching and tempering (tempering treatment): the hardness of the blank material processed in step 3) is 42HRC-48HRC; the mold has certain strength and toughness;

[0029] 1) Quenching: The billet is heated to a temperature of 750°C-800°C in a vacuum furnace and then kept for 0.5 hours, ...

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Abstract

The invention relates to a wrench mold, in particular to a welding forming method of the wrench mold. The welding forming method of the wrench mold has lower manufacturing cost compared with prior wrench molds, a high utilization rate of a mold matrix, and a long service life. Through redesign and arrangement of a traditional wrench mold processing technology, the service life of the mold is prolonged and the production cost of a manufacturing enterprise is lowered. The molding of the mold matrix is realized in advance through annealing, preliminary machining, quenching and tempering, and argon arc blow-cutting. Then, argon arc welding is used for welding foundation pits on the mold matrix. Finally, a cavity is processed in the surface of a welding material. When the height of the weldingmaterial drops to a certain level, the welding can continue. Matrix materials are not consumed and can be used repeatedly. The method has the characteristics of the lower manufacturing cost than the prior wrench molds, the high utilization rate of the mold matrix, the long service life, and easy processing.

Description

Technical field [0001] The invention relates to a wrench mold, in particular to a welding forming method of the wrench mold. Background technique [0002] Wrench is a commonly used installation and removal tool. It is a hand tool that uses the principle of leverage to turn bolts, screws, nuts, and other threads to hold the openings or sleeves of bolts or nuts. Wrenches are usually made of carbon or alloy structural steel, and molds are used when making the wrench. [0003] The processing technology of the conventional wrench mold is through blank forming → annealing → machining → heat treatment (quenching and tempering) → using a machining center to process the heat-treated blank into the required mold cavity. At present, wrench molds generally use hot mold steel materials, which are expensive. The mold made of hot mold steel is processed by the machining center after the cavity is damaged every time. The overall height after processing needs to be reduced. When the total height ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/24
CPCB23P15/24
Inventor 胡纬纬
Owner JIANGSU SHUNTIAN INT GRP JIANGDU TOOLS CO LTD
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