Method for manufacturing motorcycle cooling pump gear

A manufacturing method and cooling pump technology, which are applied in the direction of manufacturing tools, material forming presses, presses, etc., can solve the problem that the cooling pump gear does not meet the basic requirements for use, the milling end face keyway and the shaving tooth production efficiency is low, energy, energy, The waste of human resources and other problems can ensure the stability of product quality, minimal machining allowance, and save steel raw materials.

Active Publication Date: 2016-02-24
重庆聚能粉末冶金股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the defects of the above-mentioned preparation method for motorcycle cooling pump gears are: large processing allowance, resulting in waste of steel material resources; many processing processes, long processing cycle, resulting in waste of energy and human resources; poor processing surface quality, consistent dimensional accuracy Poor performance; low production efficiency for end face keyway milling and gear shaving, fast tool wear, high consumption and high cost
Various institutions have also tried to use other methods to improve production efficiency and reduce costs, but the results have been unsatisfactory, and even the produced cooling pump gears cannot meet the basic requirements for use.

Method used

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  • Method for manufacturing motorcycle cooling pump gear
  • Method for manufacturing motorcycle cooling pump gear
  • Method for manufacturing motorcycle cooling pump gear

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1, see figure 1 , 3 , 4: A mold for manufacturing motorcycle cooling pump gears, including a cylindrical die 5 with a boss on the outer surface, an upper punch 3, a next punch 10 and a second punch 12, the next punch 10 Penetrate into the gear cavity of the female mold 5, the lower second punch 12 penetrates into the next punch 10, the female mold 5 is provided with a gear cavity through the axis, the lower second punch 12 The lower three punches 15 with bosses are sleeved inside. The upper part of the bosses of the lower three punches 15 is a cylinder, and the lower part is a cylinder with symmetrical protrusions. The cylinder is connected with a In the upper punch 3 of the central through hole, by pressing the gear cavity wall of the female mold 5, the underside of the upper punch 3, the upper end faces of the next punch 10 and the lower second punch 12, and the bosses of the lower third punch 15 1. Metal powder in the cavity formed by the outer surface of t...

Embodiment 2

[0033] Embodiment 2, a kind of manufacturing method of motorcycle cooling pump gear, is raw material with metal powder, and metal powder is selected two or more in iron powder, copper powder, nickel powder and molybdenum powder, adds graphite powder, described Graphite powder is graphite powder for powder metallurgy, mixed with a lubricant, filled into a mold, pressed and sintered.

[0034] Before pressing and forming, the metal powder, graphite powder and lubricant are mixed in a mixing equipment. The mixing equipment is a conical mixer, a V-shaped mixer or a three-dimensional mixer, and the mixing time is 50 minutes.

[0035] Pressing adopts hydraulic press or mechanical press, and the process conditions are pressing pressure: 100 tons; pressing product density: 7.0g / cm 3 .

[0036] The sintering adopts a mesh belt furnace or a boat pusher furnace, the sintering atmosphere is nitrogen-hydrogen mixed gas, and the process conditions are sintering temperature: 1150°C; sinterin...

Embodiment 3

[0037] Embodiment 3, a kind of manufacturing method of motorcycle cooling pump gear, referring to embodiment 1, differs from embodiment 1 in that the mixing time is 30 minutes; the pressing process condition is a pressing pressure of 90 tons; the pressing product density is 6.8g / cm 3 .

[0038] The sintering process conditions are as follows: the sintering temperature is 1000° C.; the sintering time is 3 hours.

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Abstract

A method for manufacturing a motorcycle cooling pump gear, characterized in that: metal powder is used as a raw material and filled into a motorcycle cooling pump gear mould, pressed and formed and then sintered. The invention uses metal powder as raw material to alloy the metal powder into alloy steel through pressing and sintering, which not only avoids the waste of steel, saves steel resources greatly, but also produces motorcycle cooling pump gears with the mechanical properties of steel, further It improves its mechanical performance and overall product quality, and also greatly improves production efficiency. The invention has the advantages of simple production process, high product precision and good consistency, and ensures the stability of product quality in mass production.

Description

technical field [0001] The invention relates to a motorcycle cooling pump gear, in particular to a method for manufacturing the motorcycle cooling pump gear. Background technique [0002] At present, the manufacturing of motorcycle cooling pump gears are all made by forging steel as raw material. The specific steps are: 20CrMo or 20CrMnTi steel is used as raw material, followed by 1. Forging-2. Normalizing-3. Surface treatment (descale )-4. Turning (end face, outer circle, inner hole)-5. Turning (the other end face, step)-6. Milling (milling end face keyway)-7. Turning (finish turning inner hole)-8 .Hobbing-9.Shaving-10.Heat treatment (carburizing,quenching and tempering)-11.Surface treatment (removal of scale)-12.Grinding (grinding inner hole) and other processes. [0003] However, the defects of the above-mentioned preparation method for motorcycle cooling pump gears are: large processing allowance, resulting in waste of steel material resources; many processing processes...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/16B22F5/08B22F1/00
CPCB30B11/02
Inventor 雷啸春黄忠荣骆大国聂勋伦刘志军
Owner 重庆聚能粉末冶金股份有限公司
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