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A kind of internal combustion engine cylinder body surface treatment process

A technology of internal combustion engine cylinder and treatment process, applied in the direction of surface reaction electrolytic coating, coating, electrolytic coating, etc., can solve the problems of large thermal shock, restricting the comprehensive performance of the generator set, and high working temperature, and achieves enhanced bonding force, safety and convenience. Excellent effect of cost and thermal shock strength

Active Publication Date: 2020-11-06
FUJIAN EVERSTRONG LEGA POWER EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the generator set includes an internal combustion engine, a generator and a control system. Even if the inner surface of the aluminum alloy cylinder of the internal combustion engine is hardened by micro-arc oxidation, the cylinder requires high working temperature and large thermal shock. The current treatment process is difficult to meet the working conditions. Working under harsh conditions has long restricted the improvement of the overall performance of the generator set

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  • A kind of internal combustion engine cylinder body surface treatment process

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Effect test

Embodiment 1

[0024] A surface treatment process for an internal combustion engine cylinder, comprising the steps of:

[0025] S1. Put sodium hexametaphosphate, sodium silicate, sodium carbonate, sodium tungstate, sodium aluminate, and disodium edetate into water and stir evenly to obtain an electrolytic solution with a pH value of 10.1; wherein sodium hexametaphosphate The concentration is 28g / L, the concentration of sodium silicate is 4g / L, the concentration of sodium carbonate is 10g / L, the concentration of sodium tungstate is 1g / L, the concentration of sodium aluminate is 1.8g / L, ethylenediaminetetra The concentration of disodium acetate is 1g / L;

[0026] S2. The aluminum alloy cylinder block of the internal combustion engine to be processed is used as an anode, and a stainless steel tube is placed inside the aluminum alloy cylinder block of the internal combustion engine to be processed as a cathode. First solution guide pipes are respectively provided at both ends of the aluminum allo...

Embodiment 2

[0030] A surface treatment process for an internal combustion engine cylinder, comprising the steps of:

[0031] S1. Put sodium hexametaphosphate, sodium silicate, sodium carbonate, sodium tungstate, sodium aluminate, and disodium edetate into water and stir evenly to obtain an electrolytic solution with a pH value of 13; wherein sodium hexametaphosphate The concentration is 22g / L, the concentration of sodium silicate is 8g / L, the concentration of sodium carbonate is 5g / L, the concentration of sodium tungstate is 4g / L, the concentration of sodium aluminate is 1g / L, ethylenediaminetetraacetic acid The concentration of disodium is 2g / L;

[0032] S2. The aluminum alloy cylinder block of the internal combustion engine to be processed is used as an anode, and a stainless steel tube is placed inside the aluminum alloy cylinder block of the internal combustion engine to be processed as a cathode. First solution guide pipes are respectively provided at both ends of the aluminum alloy ...

Embodiment 3

[0036] A surface treatment process for an internal combustion engine cylinder, comprising the steps of:

[0037] S1. Put sodium hexametaphosphate, sodium silicate, sodium carbonate, sodium tungstate, sodium aluminate, and disodium edetate into water and stir evenly to obtain an electrolytic solution with a pH value of 11; wherein sodium hexametaphosphate The concentration is 26g / L, the concentration of sodium silicate is 5g / L, the concentration of sodium carbonate is 8g / L, the concentration of sodium tungstate is 2g / L, the concentration of sodium aluminate is 1.6g / L, ethylenediaminetetra The concentration of disodium acetate is 1.3g / L;

[0038]S2. The aluminum alloy cylinder block of the internal combustion engine to be processed is used as an anode, and a stainless steel tube is placed inside the aluminum alloy cylinder block of the internal combustion engine to be processed as a cathode. First solution guide pipes are respectively provided at both ends of the aluminum alloy ...

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Abstract

The invention discloses an internal combustion engine cylinder inner surface treatment process which comprises the following steps of feeding sodium hexametaphosphate, sodium silicate, sodium carbonate, sodium tungstate, sodium aluminate and ethylene diamine tetraacetic acid into water, and uniformly stirring to obtain an electrolytic solution; adopting an internal combustion engine aluminum alloycylinder to be treated as an anode, placing a stainless steel pipe in the internal combustion engine aluminum alloy cylinder to be treated so as to be used as a cathode, and arranging a first solution flow-guiding pipe and a second flow-guiding pipe at two ends of the internal combustion engine aluminum alloy cylinder to be treated; enabling the obtained electrolytic solution to flow in from thefirst solution flow-guiding pipe and enabling the obtained electrolytic solution to flow out from the second flow-guiding pipe through a solution circulating cooling system, and then returning to thesolution circulating cooling system; connecting the stainless steel pipe and a negative pole of a power supply, connecting the internal combustion engine aluminum alloy cylinder to be treated with a positive pole of the power supply, turning on the power supply for applying an electric current to the internal combustion engine aluminum alloy cylinder to be treated, and obtaining an internal combustion engine aluminum alloy cylinder with an Al2O3 ceramic layer grown on an inner surface; and roughly polishing, finely polishing, and then cleaning.

Description

technical field [0001] The invention relates to the technical field of internal combustion engine surface treatment, in particular to an internal combustion engine cylinder inner surface treatment process. Background technique [0002] Aluminum alloy has become one of the main consumables of internal combustion engines due to its light weight and easy forming characteristics, but its poor wear resistance and scratch resistance limit its application on internal combustion engine cylinders, and proper inner surface hardening must be carried out deal with. The hardening treatment process of aluminum alloy surface has been greatly developed in recent years. The micro-arc oxidation process is a non-ferrous metal surface treatment process developed in recent years, especially since the 1990s. It has become a research hotspot in the domestic academic circles, and has gradually been recognized by the industry. [0003] At present, the generator set includes an internal combustion ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/06
CPCC25D11/024C25D11/026C25D11/06
Inventor 卓本与
Owner FUJIAN EVERSTRONG LEGA POWER EQUIP CO LTD
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