Camshaft toothed wheel hub for automobile engine and powder metallurgical preparation method for camshaft toothed wheel hub

A technology of automobile engine and powder metallurgy, which is applied in the direction of metal processing equipment, metal material coating technology, coating, etc., can solve the problems of large amount of blank machining, poor product consistency, and increased production cost, and achieve less machining amount , good consistency and reduced manufacturing cost

Active Publication Date: 2016-10-26
马鞍山市华东粉末冶金厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the hub of the camshaft toothed wheel is produced by casting and machining, and the machining volume of the billet is large, resulting in a material utilization rate of only 50% and an increase in production cost. In addition, the precision of the machined product is low and the product is consistent. Poor performance, low production efficiency, greatly reduced qualified rate

Method used

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  • Camshaft toothed wheel hub for automobile engine and powder metallurgical preparation method for camshaft toothed wheel hub
  • Camshaft toothed wheel hub for automobile engine and powder metallurgical preparation method for camshaft toothed wheel hub
  • Camshaft toothed wheel hub for automobile engine and powder metallurgical preparation method for camshaft toothed wheel hub

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Effect test

Embodiment 1

[0034] Embodiment 1 A powder metallurgy preparation method of a camshaft toothed wheel hub for an automobile engine is specifically carried out according to the following steps:

[0035] Step S101, according to the weight ratio of the components of the camshaft toothed wheel hub: iron 92-96%, molybdenum 1-2%, nickel 1.5-3%, graphite 0.5-0.8%, SKZ800 lubricant 0.3-0.5% , LS-690 flow rate enhancer 0.1-0.3%, SM-8 metallurgical cutting agent 0.2-0.4%, other ≤ 1%, its weight ratio is 100%, in which molybdenum, nickel and iron are added by pre-alloying, to Make it alloyed evenly and fully, and then mix it with other ingredients weighed according to the above ratio in a double-cone mixer for 40-50 minutes, so that the ingredients are mixed evenly, and the appropriate ratio of molybdenum, nickel and graphite can be effectively controlled. The sintered size of the product changes, and the sintered strength of the product is improved at the same time;

[0036] Step S102, put the above-...

Embodiment 2

[0042] Embodiment 2 is processed with the method of embodiment 1, and each component of camshaft toothed wheel hub is listed in Table 1 according to weight proportion parameter, and the performance of the camshaft toothed wheel hub obtained in this embodiment is tested, and the performance The parameters are listed in Table 2.

Embodiment 3

[0043] Embodiment 3 is processed with the method of embodiment 1, and each component of camshaft toothed wheel hub is listed in Table 1 according to weight proportion parameter, and the performance of the camshaft toothed wheel hub obtained in this embodiment is tested, and the performance The parameters are listed in Table 2.

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Abstract

The invention discloses a camshaft toothed wheel hub for an automobile engine and a powder metallurgical preparation method for the camshaft toothed wheel hub. The method comprises the following steps: S101, preparing materials; S102, pressing and forming; S103, sintering blank; S104, refining and processing; S105, performing steam treatment; and S106, detecting and packaging. The method is linked up orderly, is fewer in processes, and has a material utilization rate higher than 95%. The camshaft toothed wheel hub obtained by the method is less in machining amount, is high in output per shift and is good in consistency, so that the product manufacturing cost is reduced by 50% when various performance requirements of the camshaft toothed wheel hub are met.

Description

technical field [0001] The invention belongs to the technical field of powder metallurgy preparation, in particular to a camshaft toothed wheel hub for an automobile engine and a powder metallurgy preparation method thereof. Background technique [0002] Camshaft toothed wheel hub 10 is a product installed on the toothed camshaft of a diesel passenger car engine that meets the Euro IV emission standards. It is used to fix the transmission gear. The dimensional accuracy and shape and position tolerance of each part are very high. . like figure 1 , figure 2 As shown, the inner hole of the hub of the camshaft toothed wheel is a special-shaped hole with a square key platform, and the shape is a semicircular claw with two key holes and three threaded holes. The upper end surface has a first round platform, and the lower end surface There is a second round table with three semi-circular grooves, the inner hole of the camshaft toothed wheel hub is press-fitted with the camshaft...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F5/08B22F3/10B22F3/03B22F3/16C23C8/18C22C38/12C22C38/08C22C33/02
CPCC22C33/0264C22C38/08C22C38/12C23C8/18B22F3/03B22F3/1007B22F3/162B22F5/08B22F2999/00B22F2998/10B22F2201/013B22F2201/02B22F1/10B22F2003/241B22F3/02
Inventor 杨传芳王士平杜敬袁聪
Owner 马鞍山市华东粉末冶金厂
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