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Method for manufacturing interlock board and stopper

A manufacturing method and technology of limit blocks, which are applied to transmission parts, belts/chains/gears, mechanical equipment, etc., can solve problems such as labor-intensive, low product qualification rate, and material waste, and achieve improved shape accuracy and overall cost low effect

Inactive Publication Date: 2005-01-26
姜堰市粉末冶金厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The manufacturing methods of interlocking plates, limit blocks and other special-shaped parts in automobile gearboxes are generally formed by welding 45 carbon steel bars or 45 carbon steel billets, and are formed by multi-process mechanical cutting and high-frequency quenching. Both of the above two manufacturing methods can process interlocking plates and limit blocks that meet the requirements of use. The disadvantages are material waste and labor time, and the pass rate of multi-process mechanical cutting products is low. The material used for a single piece of interlocking plate mass production is 661g. , the net weight is 108g, and the labor time is more than 0.5h. When the limit block is manufactured in batches, the material used for a single piece is 978g, the net weight is 90g, and the labor time is about 0.5h.

Method used

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Effect test

Embodiment 1

[0016] Embodiment 1: fill the alloy powder material of particle size ≥ 100 purpose through sealing and mixing uniformly in the prefabricated mold, each composition is 4.5% Cu, 3.5% Ni, 0.8% C, 0.6% zinc stearate by weight ratio, The rest is Fe powder; at 7tf / cm 2 Press down to form an alloy steel billet; the billet is sintered at a high temperature of 1120±20°C, and kept in a reducing gas for 2.5 hours; cooled to room temperature through a water jacket; the formed billet is placed in a finishing die for further extrusion , the outer diameter of the extrusion allowance is 80 μm, and the inner diameter is 60 μm; finally, a small amount of local cutting is trimmed and shaped. Compared with the original manufacturing method, this embodiment can greatly save raw materials and processing man-hours, improve processing accuracy, and improve tensile strength and wear resistance.

Embodiment 2

[0017] Embodiment 2: Fill the alloy powder material with particle size ≥ 100 mesh uniformly mixed through sealing and stirring in the prefabricated mold, each composition is 5% Cu, 4% Ni, 0.8% C, 0.6% zinc stearate by weight, the rest It is Fe powder; at 8tf / cm 2 Press down to form an alloy steel billet; the billet is sintered at a high temperature of 1120±20°C, and kept in a reducing gas for 2.5 hours; cooled to room temperature through a water jacket; the formed billet is placed in a finishing die for further extrusion , the outer diameter of the extrusion allowance is 80 μm, and the inner diameter is 60 μm; finally, a small amount of local cutting is trimmed and shaped. Compared with the original manufacturing method, this embodiment can greatly save raw materials and processing man-hours, improve the tensile strength and wear resistance, and at the same time improve the index of impact toughness.

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Abstract

A technology for manufacturing the interlocking plate and limiting block used in the speed changing box of car includes proportionally mixing Cu powder, Ni powder, C powder, powdered zinc stearate and Fe powder, stirring, die pressing under 5-9 tf / sq.cm, sintering at 1083-1160 deg.C, holding the temp in reductive atmosphere for 1.5-3 hrs, cooling, fine die pressing, and turning.

Description

technical field [0001] The invention relates to a manufacturing method of an interlocking plate and a limiting block. The interlocking plate and the limiting block are special-shaped components matched in an automobile gearbox. More specifically, the present invention relates to an automobile gearbox. Manufacturing method of special-shaped parts. Background technique [0002] The manufacturing methods of interlocking plates, limit blocks and other special-shaped parts in automobile gearboxes are generally formed by welding 45 carbon steel bars or 45 carbon steel billets, and are formed by multi-process mechanical cutting and high-frequency quenching. Both of the above two manufacturing methods can process interlocking plates and limit blocks that meet the requirements of use. The disadvantages are material waste and labor time, and the pass rate of multi-process mechanical cutting products is low. The material used for a single piece of interlocking plate mass production is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/16C22C38/16
Inventor 徐华平梁汉林丁根富朱正刚
Owner 姜堰市粉末冶金厂
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