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Manufacturing technique of timing sprocket device for ultralight aluminium alloy valve camshaft

A timing sprocket and manufacturing process technology, applied in valve devices, mechanical equipment, engine components, etc., can solve the problems of poor machining performance of aluminum alloy composite materials, limited market application, high price, etc. Momentum reduction, high tensile strength effect

Inactive Publication Date: 2015-07-22
沈军 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the mechanical properties of aluminum alloy composites containing ceramic reinforcement phases are poor.
The result is that it is very expensive, making its market application very limited, mainly for personalized car modification and luxury vehicles

Method used

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  • Manufacturing technique of timing sprocket device for ultralight aluminium alloy valve camshaft

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Embodiment Construction

[0008] This specific embodiment adopts the following technical scheme: its production process is: the mass fraction is 0.5%-1.0%Cu, 7%-16%Mg, 0%-0.5%Si, 0%-1%Zr, 0%- 1% Sn, 81.5-92.5% Al powder, use tool steel mold to press it, the maximum distance between the mold and the indenter is 50-100 microns, the molding pressure is 250-600 MPa at room temperature, and then the molded material Put it into a metal belt type nitrogen protection continuous sintering furnace for sintering, after cooling, put it into a shape-correcting mold, the distance between the mold and the indenter is 50-100 microns, the temperature is controlled at 20-350 degrees Celsius, and the mold is lubricated with molybdenum disulfide , The shaping pressure is 350-650 MPa, the shaping mold material is tool steel or tungsten carbide steel, the time is 10-60 minutes, and molybdenum disulfide is used for mold lubrication.

[0009] The sintering process parameters are set as oxygen content less than 10PPM, flow rat...

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Abstract

A manufacturing technique of a timing sprocket device for an ultralight aluminium alloy valve camshaft relates to the technical field of automobile component production. The production technology comprises the following steps: press-forming the following powders by mass percent: 0.5-1.0% of Cu, 7-16% of Mg, 0-0.5% of Si, 0-1% of Zr, 0-1% of Sn and 81.5-92.5% of Al, through a tool steel die, then placing the formed material into a metal strap-type nitrogen protection continuous firing furnace to be sintered, cooling, and finally placing into a sizing die, wherein the distance between the die and a pressure head is 50-100 mu, the temperature is controlled to be 20-350 DEG C, the die adopts molybdenum disulfide for lubrication, the sizing pressure is 350-650 MPa, the sizing die is made of tool steel or steel-bonded tungsten carbide, and the time is 10-60 min. As ultrathin aluminium alloy is adopted, not only is the weight of an engine reduced, but also the momentum of moving elements is reduced without surface abrasion-proof hardening and heat treatment, and the manufacturing cost is greatly lowered.

Description

Technical field: [0001] The invention relates to the technical field of auto parts production, in particular to a manufacturing process of an ultra-light aluminum alloy valve camshaft timing sprocket device. Background technique: [0002] Camshaft timing device is a new type of device to improve the power performance of automobile engine and reduce fuel consumption. It is an indispensable and important part of high-performance automobile engine. There are at least two to four sets on each automobile. Each set weighs about four to six kilograms and is worth about fifteen to twenty dollars. The global market capacity is huge. At present, timing sprocket devices are mainly made of steel. Since the timing sprocket device is a high-speed running part, the use of ultra-light aluminum alloy can not only reduce the weight of the engine, but more importantly, reduce the momentum of the moving parts, thereby further improving the power performance of the car and reducing fuel consum...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/06B22F3/16B22F5/08F01L1/348
Inventor 沈军霍树海
Owner 沈军