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Process for extrusion casting piston blank of internal combustion engine with local reinforced of metal base composite material

A composite material and local enhancement technology, applied in the directions of pistons, rotors, cylinders, etc., can solve the problems of human mucous membranes and environmental protection, poor slag discharge in the cavity, etc. Effect

Inactive Publication Date: 2006-10-11
张强
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the squeeze casting method, the slag removal performance of the cavity is very poor, and it is easy to produce inclusions and waste products, and various chlorine-containing degassing and slag removal agents will produce strong pungent odors during the degassing process, which is harmful to human mucous membranes. bad for the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] The process of partially reinforcing the piston blank of an internal combustion engine by the squeeze casting metal matrix composite material of this embodiment adopts the following steps:

[0065] (1) Making reinforced phase pre-components

[0066] Using metal matrix composite material reinforced phase pre-component preparation method, metal matrix composite material local reinforced product pre-component preparation method, short fiber reinforced metal matrix composite product porous preform preparation method to make reinforced phase pre-component, metal matrix composite material reinforced The preparation method of the phase pre-component has been recorded in the Chinese patent application number 03134444.5, and the preparation method of the metal matrix composite material partial reinforcement product pre-component has been described in the Chinese patent application number 03134445.3. Short fiber reinforced metal matrix composite The preparation method of the porous p...

Embodiment 2

[0099] In this embodiment, in the process step of (2) preparing the base alloy charge, the base alloy charge is prepared according to the following weight ratio:

[0100] Silicon 11%

[0101] Copper 0.5%

[0102] Magnesium 0.4%

[0103] Manganese 0.2%

[0104] Vanadium 0.05%

[0105] Aluminum up to 100%

[0106] In (5) the modification treatment process step, in the alloy melt, add the following ternary composite modifier (based on the added amount of single element) that is crushed to 5-10mm particles by weight percentage of the base alloy charge:

[0107] Be 0.013%

[0108] Ti 0.04%

[0109] Te 0.002%

[0110] The other process steps are the same as in Example 1.

Embodiment 3

[0112] In this embodiment, in the process step of (2) preparing the base alloy charge, the base alloy charge is prepared according to the following weight ratio:

[0113] Silicon 13%

[0114] Copper 2.0%

[0115] Magnesium 1.4%

[0116] Manganese 0.9%

[0117] Vanadium 0.27%

[0118] Aluminum up to 100%

[0119] In (5) the modification treatment process step, in the alloy melt, add the following ternary composite modifier (based on the added amount of single element) that is crushed to 5-10mm particles by weight percentage of the base alloy charge:

[0120] Be 0.016%

[0121] Ti 0.06%

[0122] Te 0.004%

[0123] The other process steps are the same as in Example 1.

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PUM

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Abstract

A process for extrusion casting metal matrix composite materials to partially reinforce internal combustion engine piston blanks, comprising: (1) making reinforced phase pre-components; 0.5-2.0%, magnesium 0.4-1.4%, manganese 0.2-0.9%, vanadium 0.05-0.27%, aluminum added to 100%; (3) smelting matrix alloy; (4) degassing refining: argon gas , the pressure of argon blowing is 100-110 mm Hg, the time of argon blowing is 6-8 minutes, and the refining temperature is 780-810°C; (5) Modification treatment: add 0.013-0.016% Be, 0.04- 0.06% Ti, 0.002-0.004% Te ternary composite modifier; (6) preparing a mold; (7) pouring a piston blank. The invention has the advantages of high quality, high efficiency, low cost, no pollution and the like. It is suitable for the production of locally reinforced aluminum piston products of squeeze casting metal matrix composite materials.

Description

Technical field [0001] The invention belongs to the technical field of manufacturing process of mechanical parts, and specifically relates to a process for locally reinforcing an internal combustion engine piston blank by squeezing a metal matrix composite material. Background technique [0002] The use of metal matrix composite materials to locally enhance the first ring groove of internal combustion engine pistons and the diesel engine piston combustion chamber to meet the increasing technical requirements of modern high-parameter internal combustion engines for piston parts is increasingly recognized as an effective and feasible approach. Japan, the United States, Germany and other countries have already supplied practical products to the market, with good results, and first used as a powerful upgrade product for traditional pistons with high Ni austenitic cast iron ring structure for light-duty high-speed diesel engines and heavy-duty enhanced diesel engines. Highly valued. T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D17/00B22D19/00C22C21/00
Inventor 张强窦柱张尚荣
Owner 张强
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