Aluminum-silicon-titanium alloy air cylinder sleeve and processing technology thereof

A processing technology, cylinder liner technology, applied in the direction of metal material coating technology, coating, solid diffusion coating, etc., can solve the problems of easy corrosion fatigue cracking, poor corrosion resistance, high manufacturing cost and other problems on the surface of cooling medium, and achieve shortening Improved processing cycle, improved corrosion resistance, and improved mechanical properties

Inactive Publication Date: 2018-10-23
ZYNP GRP ANHUI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) There are many processes and a variety of mechanical equipment are required, such as lathes, boring machines, internal grinding, external grinding and honing machines, so the production cycle is long and the manufacturing cost is high;
[0005] (2) The corrosion resistance of materials such as cast iron or structural steel is poor, and the surface layer of the cooling medium is easily corroded, fatigued and cracked, so the service life is short;

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] An aluminum-silicon-titanium alloy cylinder liner, the cylinder liner is composed of: Si: 8%, Ti: 6%, C: 0.02%, Ni: 2%, Cr: 0.5%, Sr: 0.3%, Mn: 0.6% , Ca: 0.5%, S: 0.01%, the rest is aluminum;

[0029] A processing technology for an aluminum-silicon-titanium alloy cylinder liner, specifically comprising the following steps:

[0030] S1. Dosing ingredients according to the mass percentage of the cylinder liner composition;

[0031] S2. Spray the paint evenly in the mold, and after the paint is dry, move the mold to the nitrogen protection room;

[0032] S3. Pour the ingredients in step S1 into an intermediate frequency induction furnace for smelting. The melting temperature of the Al-Si-Ti alloy is 700°C; pour the molten Al-Si-Ti alloy into the mold, and cast it into a cylinder liner by centrifugal casting blank;

[0033] S4. Carry out rough turning on the outer circle and inner hole of the cylinder liner blank obtained in S3 by a numerically controlled lathe, leaving...

Embodiment 2

[0041] An aluminum-silicon-titanium alloy cylinder liner, the cylinder liner is composed of: Si: 3%, Ti: 5%, C: 0.03%, Ni: 2%, Cr: 0.5%, Sr: 0.1%, Mn: 0.6% , Ca: 0.9%, S: 0.03%, the rest is aluminum;

[0042] A processing technology for an aluminum-silicon-titanium alloy cylinder liner, specifically comprising the following steps:

[0043] S1. Dosing ingredients according to the mass percentage of the cylinder liner composition;

[0044] S2. Spray the paint evenly in the mold, and after the paint is dry, move the mold to the nitrogen protection room;

[0045] S3. Pour the ingredients in step S1 into an intermediate frequency induction furnace for smelting. The melting temperature of the Al-Si-Ti alloy is 750°C; pour the molten Al-Si-Ti alloy into the mold, and cast it into a cylinder liner by centrifugal casting blank;

[0046] S4. Carry out rough turning on the outer circle and inner hole of the cylinder liner blank obtained in S3 by a CNC lathe, leaving a margin of 0.8mm;...

Embodiment 3

[0054] An aluminum-silicon-titanium alloy cylinder liner, the cylinder liner is composed of: Si: 5%, Ti: 8%, C: 0.01%, Ni: 4%, Cr: 1%, Sr: 0.2%, Mn: 0.8% , Ca: 0.5%, S: 0.02%, the rest is aluminum;

[0055] A processing technology for an aluminum-silicon-titanium alloy cylinder liner, specifically comprising the following steps:

[0056]S1. Dosing ingredients according to the mass percentage of the cylinder liner composition;

[0057] S2. Spray the paint evenly in the mold, and after the paint is dry, move the mold to the nitrogen protection room;

[0058] S3. Pour the ingredients in step S1 into an intermediate frequency induction furnace for smelting. The melting temperature of the Al-Si-Ti alloy in the molten state is 720°C; pour the molten Al-Si-Ti alloy into the mold, and cast it into a cylinder liner by centrifugal casting blank;

[0059] S4. Carry out rough turning on the outer circle and inner hole of the cylinder liner blank obtained in S3 by a numerically controll...

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Abstract

The invention discloses an aluminum-silicon-titanium alloy air cylinder sleeve and a processing technology thereof. The aluminum-silicon-titanium alloy air cylinder sleeve comprises the following components: 3-8% of Si, 3-8% of Ti, 0.01-0.03% of C, 2-4% of Ni, 0.5-1.5% of Cr, 0.1-0.3% of Sr, 0.6-1% of Mn, 0.4-0.9% of Ca, 0.01-0.03% of S and the balance aluminum. The fatigue life of the manufactured air cylinder sleeve is prolonged by 2.5 times, the microhardness is increased by 25%, the wear resistance is improved by 60%, the corrosion resistance is improved by 50%, the mechanical property ofthe air cylinder sleeve is improved, the incident problems including cavitation erosion, corrosion and fatigue cracking are improved, the service life of the air cylinder sleeve is prolonged, investment of technological equipment is reduced, the manufacturing cost is reduced, the processing period is shortened, energy conservation and environmental protection are realized, machining without cutting output is carried out on the surface of metal, the precision of the air cylinder sleeve is greatly improved, and the Ra value is equal to or less than 0.1.

Description

technical field [0001] The invention belongs to the technical field of engines, and in particular relates to an aluminum-silicon-titanium alloy cylinder liner and a processing technology thereof. Background technique [0002] The cylinder liner, the cylinder head and the piston together constitute the working space of the cylinder, which is the lead of the reciprocating motion of the piston. It is cooled by cooling water outside and bears mechanical damage and corrosion damage. [0003] Existing cylinder liners are generally produced and processed using wear-resistant alloy cast iron containing phosphorus or boron or seamless cold-drawn steel pipes as materials. The processing technology is complicated and there are many shortcomings: [0004] (1) There are many processes and a variety of mechanical equipment are required, such as lathes, boring machines, internal grinding, external grinding and honing machines, so the production cycle is long and the manufacturing cost is h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/02C22C21/00C22F1/043C22F1/04C23C8/36B23P15/00
Inventor 朱斌江城杨俊
Owner ZYNP GRP ANHUI CO LTD
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