Material and method for manufacturing piston

A manufacturing method and technology of pistons, applied in the direction of pistons, mechanical equipment, engine components, etc., can solve problems such as the need to improve the structural strength of pistons, affect the reliability of the whole machine, thermal fatigue damage, etc., and achieve the solution of uneven carbon fiber division and excellent The effect of mechanical properties and low cost

Inactive Publication Date: 2016-03-02
刘平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional piston is made of aluminum alloy. Due to the limitation of the characteristics of the material itself and the production conditions of the process, it is still difficult to meet the requirements despite the use of various strengthening measures. The phenomenon of thermal fatigue damage is becoming more and more prominent, which has become the main factor affecting the reliability of the whole machine. one of the factors
Application number CN1610601A discloses a method for manufacturing forged steel pistons. The method is that the piston blank is forged in one piece, and an additionally processed ring cover is used to assemble the groove processed by the piston head. This process uses cast steel materials, and the material itself High density, high processing cost, easy to wear, this process is complicated to manufacture, high cost, and the structural strength of the piston needs to be improved

Method used

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  • Material and method for manufacturing piston

Examples

Experimental program
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Effect test

Embodiment 1

[0017] A piston manufacturing material, characterized in that: the piston is made of a carbon fiber reinforced aluminum-based composite material, the surface of the material is coated with 10% carbon fiber T50, and the base layer is made of 90% aluminum alloy ZL109 material. The preparation method is as follows:

[0018] (1) Pretreatment of the carbon fiber T50 surface with SIC isolation layer, disperse the SIC particles in a sol prepared by polycarbosilane and solvent n-hexane to form a suspension, the carbon fiber is ultrasonically coated through the suspension, and the frequency of ultrasonic stirring Controlled at 20KHz, stirring power 4000w, time 40s, and finally dried and dehydrated to obtain carbon fiber T50 coated with SIC isolation layer;

[0019] (2) The aluminum-based ZL109 is smelted in a resistance furnace at 740°C, and the temperature is kept for 10 minutes after all melting.

[0020] (3) The pre-treated carbon fiber is preheated to 600°C, and then directly added to th...

Embodiment 2

[0022] The rest is the same as the first embodiment, the difference is that the surface of the material described in claim 1 is covered with 20% carbon fiber T50, and the base layer is made of 80% aluminum alloy ZL109 material.

Embodiment 3

[0024] The rest is the same as the first embodiment, the difference is that the surface of the material described in claim 1 is covered by 30% carbon fiber T50, and the base layer is made of 70% aluminum alloy ZL109 material.

[0025]

[0026] Through the above three examples, the three sets of data in the above table show that when the carbon fiber T50 content in the material is 30% and the aluminum matrix content is 70%, the carbon fiber composite material has the best mechanical properties and the produced piston has the best performance. It is more conducive to the production of pistons.

[0027] The piston manufactured by the present invention uses a carbon fiber reinforced aluminum-based composite material. Compared with traditional aluminum alloy, cast iron, and cast steel materials, the piston manufactured by this material has lighter weight, low thermal expansion coefficient, good thermal conductivity, and high temperature conditions. More wear-resistant. The method for m...

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PUM

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Abstract

The invention discloses a material and method for manufacturing a piston. The piston is made of the carbon fiber reinforced aluminum matrix composite material. The method for the piston comprises the manufacturing steps that 1, a piston pin hole is drilled; 2, pin seat pits on the two sides are milled; 3, an outer circle, a ring groove, a skirt part and an end face are roughly turned; 4, a spigot is roughly turned and located; 5, an oil return tank is milled; 6, the piston pin hole is reamed; 7, a pin seat oil hole is drilled; 8, burrs are removed; 9, the piston pin hole is subjected to rough boring and fine boring; 10, the inner side of the pin hole is chamfered; 12, the spigot is subjected to finish turning; 13, the outer circle, the ring groove, a ring bank and a chamfer are turned; 14, the piston pin hole is rolled and extruded; 15, burrs are removed; 16, the piston is cleaned and blown down; and 17, final inspection is carried out. According to the method for manufacturing the carbon fiber reinforced aluminum matrix composite material, the process is simple, and cost is low; and the piston manufacturing technology is simple and reasonable in process, no toxic and harmful substance is generated in the manufacturing process, and the material and method are suitable for being popularized in various piston production industries.

Description

technical field [0001] The invention relates to a production process of auto parts, in particular to a material and a production method for producing a piston. Background technique [0002] The automobile piston is like the central part of the automobile engine, which occupies an extremely important position when the engine is started. The automobile piston is used to withstand the gas pressure, and the connecting rod drives the crankshaft to rotate through the piston pin, and the top of the piston is also an integral part of the combustion chamber. In recent years, due to the continuous improvement of engine strengthening, the engine speed, average effective pressure and average piston speed have been greatly improved compared with before, so the thermal load and mechanical load of the engine have increased. Due to the important role of the piston in the engine, the design and manufacture of the piston have also been greatly changed and improved, so as to meet the high emi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02F3/00C22C47/08C22C49/06C22C49/14C22C101/10C22C121/02
Inventor 刘平
Owner 刘平
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