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Cylinder gasket die and machining process method thereof

A processing technology and cylinder gasket technology, applied in the field of cylinder gasket mold and its processing technology, can solve the problems of poor sealing performance, short start and development time, lack of fastening mechanism, etc., so as to improve strength and tightness and reduce production. The effect of cost and process improvement

Active Publication Date: 2020-03-24
HUOSHAN HUINENG AUTO PARTS MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing cylinder pads have the problems of low strength, poor sealing performance, poor high temperature resistance, poor guiding performance and poor stability
The currently used stamping dies for cylinder head gaskets have certain defects, such as incomplete removal of waste, low production capacity, small number of stampings per die, lack of fastening mechanisms, and poor knife edge toughness.
[0003] The start and development time of domestic automobiles is short, the production process of cylinder head gasket is immature, and the development speed is slow. In addition, the domestic process supervision and development of cylinder head gasket is relatively weak, and the development of cylinder head gasket process is relatively imperfect.

Method used

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  • Cylinder gasket die and machining process method thereof
  • Cylinder gasket die and machining process method thereof
  • Cylinder gasket die and machining process method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0030] The specific operation steps of the described a kind of cylinder gasket processing technology are as follows:

[0031] Raw material procurement: the procurement department purchases the required cylinder head gasket production and processing raw materials, iron-based powder 15%-30%, copper-based powder 10%-25%, engine oil 1%-4%, tackifier 0.6%-0.9%, 0.1%-0.4% preservative, 0.3%-0.6% oxidant, 20%-35% graphite, 7%-10% resin, 1%-2.5% friction modifier.

[0032] Thermoforming stage: Pour the mixed and processed raw materials into the mold for raw material production, and use a double-piece thermoforming machine tool to obtain the blank raw material of the cylinder gasket by means of pressure. There are many thermoforming processing methods that are not limited to the double-sheet thermoforming mentioned in the present invention, and there are also counter-molding and differential pressure. The hot pressing condition is to last 25-40 minutes in a high-necked induction heati...

Embodiment example 2

[0041] The specific operation steps of the described a kind of cylinder gasket processing technology are as follows:

[0042] Raw material procurement: the procurement department purchases the required cylinder head gasket production and processing raw materials, iron-based powder 15%-30%, copper-based powder 10%-25%, engine oil 1%-4%, tackifier 0.6%-0.9%, 0.1%-0.4% preservative, 0.3%-0.6% oxidant, 20%-35% graphite, 7%-10% resin, 1%-2.5% friction modifier.

[0043] Thermoforming stage: Pour the mixed and processed raw materials into the mold for raw material production, and use a double-piece thermoforming machine tool to obtain the blank raw material of the cylinder gasket by means of pressure. There are many thermoforming processing methods that are not limited to the double-sheet thermoforming mentioned in the present invention, and there are also counter-molding and differential pressure. The hot pressing condition is to last 25-40 minutes in a high-necked induction heati...

Embodiment example 3

[0051] The specific operation steps of the described a kind of cylinder gasket processing technology are as follows:

[0052] Raw material procurement: the procurement department purchases the required cylinder head gasket production and processing raw materials, iron-based powder 15%-30%, copper-based powder 10%-25%, engine oil 1%-4%, tackifier 0.6%-0.9%, 0.1%-0.4% preservative, 0.3%-0.6% oxidant, 20%-35% graphite, 7%-10% resin, 1%-2.5% friction modifier.

[0053] Thermoforming stage: Pour the mixed and processed raw materials into the mold for raw material production, and use a double-piece thermoforming machine tool to obtain the blank raw material of the cylinder gasket by means of pressure. There are many thermoforming processing methods that are not limited to the double-sheet thermoforming mentioned in the present invention, and there are also counter-molding and differential pressure. The hot pressing condition is to last 25-40 minutes in a high-necked induction heati...

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Abstract

The invention discloses a cylinder gasket die and a machining process method thereof. The cylinder gasket die is composed of a lower die and an upper die. The lower die comprises lower die guide plates, guide columns, lower die bases and other parts of the lower die, wherein the lower die guide plates and the guide columns are arranged in lower die connecting parts correspondingly; and the upper die comprises upper die guide plates, guide sleeves, upper die bases and other parts of the upper die, wherein the upper die guide plates and the guide sleeves are arranged in upper die connecting parts correspondingly. Scrap cutters are arranged on the periphery of each lower die base. Each upper die base is surrounded by trimming knifes. The trimming knifes are fixed to a base of the upper die through bolts; various punched holes are formed in the trimming knifes; and the punched holes are also formed in the base of the upper die. The machining process of the cylinder gasket comprises the steps of raw material purchasing, hot forming stage, mold forming stage, hot pressing forming stage, heat treatment stage, surface treatment stage, grinding and polishing stage and part testing. On the basis that the production efficiency of the die is improved, the steps of the machining process of the cylinder gasket are regulated and perfected, and therefore, the quality of the cylinder gasket isfurther improved.

Description

technical field [0001] The invention relates to the field of cylinder pads, in particular to a cylinder pad mold and a processing method thereof. Background technique [0002] Cylinder head gasket, also known as cylinder liner, is located between the cylinder head and the cylinder block. Its function is to fill the microscopic pores between the cylinder block and the cylinder head to ensure good sealing at the joint surface, thereby ensuring the sealing of the combustion chamber and preventing Cylinder leaks and water jacket leaks. According to different materials, cylinder gaskets can be divided into metal-asbestos gaskets, metal-composite gaskets and all-metal gaskets. The cylinder gasket is the seal between the top surface of the block and the bottom surface of the cylinder head. Its function is to keep the cylinder seal airtight, and keep the coolant and engine oil flowing from the body to the cylinder head from leaking. The cylinder gasket bears the pressure caused b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00B22F3/03B22F3/02B22F3/14B22F3/24B22F5/00
CPCB22F3/03B22F3/02B22F3/14B22F3/24B22F5/008B22F2003/247B22F2003/248B22F1/10
Inventor 周中亮徐明传汪长开田同贵
Owner HUOSHAN HUINENG AUTO PARTS MFG
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