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Camshaft toothed wheel hub for automobile engine and powder metallurgy preparation method thereof

An automotive engine and powder metallurgy technology, applied in metal processing equipment, metal material coating technology, solid-state diffusion coating, etc., can solve the problems of large blank machining volume, increased production cost, poor product consistency, etc. Less quantity, lower manufacturing cost, good consistency

Active Publication Date: 2018-12-25
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%, which increases the 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 metallurgy preparation method thereof
  • Camshaft toothed wheel hub for automobile engine and powder metallurgy preparation method thereof
  • Camshaft toothed wheel hub for automobile engine and powder metallurgy preparation method thereof

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Experimental program
Comparison scheme
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 ratio of the components of the camshaft toothed wheel hub by weight: 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 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. 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-ment...

Embodiment 2

[0042] Embodiment 2 is processed with the method of embodiment 1, and each component of the camshaft toothed wheel hub is listed in Table 1 according to the weight ratio parameters. The camshaft toothed wheel hub obtained in this embodiment is tested for its 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 by weight proportion parameter, the camshaft toothed wheel hub that this embodiment obtains, its performance is tested, 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 metallurgy preparation method thereof. The method is carried out according to the following steps: step S101, batching; step S102, pressing and forming; step S103, blank sintering; step S104, finishing and processing; step S105, steam treatment; step S106, testing and packaging. The method of the present invention is connected in an orderly manner, with fewer procedures and a material utilization rate of more than 95%. The camshaft toothed wheel hub obtained by the method has less machining volume, high shift output and good consistency. It satisfies various performance requirements of the product. At the same time, the manufacturing cost of the product is reduced by 50%.

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. . Such as 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 camsh...

Claims

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Application Information

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Patent Type & Authority Patents(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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