CN102517536B - Novel plasma powder core wire inner wall spraying method - Google Patents
Novel plasma powder core wire inner wall spraying method Download PDFInfo
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- CN102517536B CN102517536B CN2011104212886A CN201110421288A CN102517536B CN 102517536 B CN102517536 B CN 102517536B CN 2011104212886 A CN2011104212886 A CN 2011104212886A CN 201110421288 A CN201110421288 A CN 201110421288A CN 102517536 B CN102517536 B CN 102517536B
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Abstract
The invention discloses a novel plasma cored wire inner hole wall spraying method, which comprises the following steps of firstly, preprocessing the surface of a workpiece; selecting an iron-based powder core wire with an antifriction and wear-resistant powder core and a stainless steel outer skin, wherein the antifriction and wear-resistant powder core is added with molybdenum Mo, chromium Cr, nickel Ni, boron B, silicon Si and iron Fe components, and spraying the iron-based powder core wire on the surface of a small inner hole of the workpiece through a plasma transfer wire arc spraying Process (PTWA) to obtain a wear-resistant coating; and carrying out honing processing on the prepared wear-resistant coating. The wear-resistant coating prepared by the method has high bonding strength with a substrate, the coating is not easy to fall off, the hardness of the coating is higher than that of the traditional cast iron lining, the wear resistance is greatly improved, 1-5% of pores formed by a spraying process have an oil storage function, lubrication is promoted to play a role in reducing friction and the like, and the problems of weight and size increase of the cast iron lining of the aluminum alloy engine cylinder and oil consumption and emission increase caused by inconsistent thermal expansion with the inner wall of the cylinder are solved.
Description
Technical field
The present invention relates to wear resistant friction reducing coating technology field, not only relate to the spraying coating process of Motor Engine Cylinder inwall wear-resistant coating preparation, also relate to method for spraying inner wall with novel plasma cored wire.
Background technology
At present, under the development trend of energy-saving and emission-reduction, the quality that reduces engine is one of important channel of automotive light weight technology, motor car engine is replaced by aluminum alloy materials by traditional cast iron gradually, but the intensity of aluminium alloy and hardness are starkly lower than cast iron in the prior art scheme, to inlay cast iron liners at cylinder inner wall and improve intensity, can cause so again engine overall weight and size to increase, be unfavorable for energy-conservation, thereby the difference of the thermal expansivity of cast iron and aluminium alloy also can cause the lining temperature distortion to break away from aluminium alloy cylinder inner wall in addition, so that oil consumption and movement increase, do not meet the requirement of energy-saving and emission-reduction.
Another kind of method employing Stainless Steel Wire or Mild Steel Wire are to prepare stainless steel coating and low-alloy carbon steel coating at cylinder inner wall in the prior art, although it is low much that overall weight is inlayed cast iron liners, although but low-alloy carbon steel coating wear resistance is better, but not anti-exhaust gas corrosion, although and stainless steel coating has preferably anti-exhaust gas corrosion, the wear resistance deficiency.
Summary of the invention
The purpose of this invention is to provide a kind of method for spraying inner wall with novel plasma cored wire, can be used for the preparation such as endoporus wear-resistant coatings such as motor car engine aluminium alloy cylinder inner walls.Adopt powder cored filament material, by plasma transferred arc silk material spraying coating process PTWA(Plasma transferred Wire Arc) wear-resistant coating of technique preparation, with the bonding strength of alloy matrix aluminum up to 40-55MPa, coating hardness 400-500Hv0.1, be higher than traditional cast iron liners 280Hv0.1, wear resisting property improves greatly, and the hole of spraying coating process formation 1-5% has oil storage function, promote to lubricate advantages such as playing antifriction function, solved the problem that aluminium alloy engine cylinder cast iron liners weight and size increase, and with the inconsistent oil consumption that causes of the thermal expansion of cylinder inner wall, the problem that discharging increases.
The objective of the invention is to be achieved through the following technical solutions, a kind of method for spraying inner wall with novel plasma cored wire, described spraying method comprises:
Workpiece surface is carried out pre-treatment;
Select the stainless steel crust and added the ferrous alloy powder core-wire material of the anti-friction wear-resistant powder core of molybdenum Mo, chromium Cr, nickel, boron, silicon Si and iron Fe component, described ferrous alloy powder core-wire material is sprayed on the bore surface of described workpiece by plasma transferred arc silk material spraying coating process PTWA, obtains wear-resistant coating;
Prepared wear-resistant coating is carried out the honing processing treatment.
Described workpiece surface is carried out pre-treatment, specifically comprises:
Adopt industrial cleaning agent described inner hole of workpiece surface to be carried out oil removing is cleaned and oven dry, carry out the blast roughening treatment again, making the Substrate Surface Roughness after the alligatoring is Ra2.0～4.0.
The described bore surface that described ferrous alloy powder core-wire material is sprayed on described workpiece by plasma transferred arc silk material spraying coating process PTWA, concrete spraying parameter is:
Argon flow amount 50～80L/min, hydrogen flowing quantity 5～20L/min, air pressure is 3～8bar, argon pressure is 8～12bar, hydrogen pressure is 8～12bar, and wire feed rate is 1～10m/min, electric current 60～100A, voltage 80～120v, revolution 400～700/min feeds the silk amount 20～40mm/s.
Described prepared wear-resistant coating is carried out after the honing processing treatment, the smooth finish of the wear-resistant coating after the processing reaches Ra0.2-0.8.
As seen from the above technical solution provided by the invention, this spraying method at first carries out pre-treatment to workpiece surface; Select the anti-friction wear-resistant powder core that is added with molybdenum Mo, chromium Cr, nickel, boron, silicon Si and iron Fe component and the ferrous alloy powder core-wire material of stainless steel crust, described ferrous alloy powder core-wire material is sprayed on the bore surface of described workpiece by plasma transferred arc silk material spraying coating process (PTWA), obtains wear-resistant coating; Prepared wear-resistant coating is carried out the honing processing treatment.Wear-resistant coating and the substrate combinating strength of the method preparation are high, the coating difficult drop-off, coating hardness is higher than traditional cast iron liners, wear resisting property improves greatly, and the hole of spraying coating process formation 1-5% has oil storage function, promote the lubricated advantage such as antifriction function that plays, solved the problem that aluminium alloy engine cylinder cast iron liners weight and size increase, and the problem that increases with the inconsistent oil consumption that causes of the thermal expansion of cylinder inner wall, discharging.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention, the accompanying drawing of required use was done to introduce simply during the below will describe embodiment, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite of not paying creative work, can also obtain other accompanying drawings according to these accompanying drawings.
The schematic flow sheet of the method for spraying inner wall with novel plasma cored wire that Fig. 1 provides for the embodiment of the invention;
Fig. 2 is the coating overall schematic of middle aluminium alloy cylinder inner wall that the embodiment of the invention gives an actual example;
Fig. 3 is the coating partial enlarged drawing of middle aluminium alloy cylinder inner wall that the embodiment of the invention gives an actual example.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on embodiments of the invention, those of ordinary skills belong to protection scope of the present invention not making the every other embodiment that obtains under the creative work prerequisite.
Below in conjunction with accompanying drawing the embodiment of the invention is described in further detail, is illustrated in figure 1 as the schematic flow sheet of the method for spraying inner wall with novel plasma cored wire that the embodiment of the invention provides, described preparation method comprises:
Step 11: workpiece surface is carried out pre-treatment.
In this step, described preprocessing process is specially: adopt industrial cleaning agent the bore surface of described some industrial part to be carried out oil removing is cleaned, oven dry, then carry out the blast roughening treatment, making the Substrate Surface Roughness after the alligatoring is Ra2.0-4.0.
Step 12: the bore surface that the ferrous alloy powder core-wire material is sprayed on described workpiece by plasma transferred arc silk material spraying coating process PTWA.
In this step, specifically can select the anti-friction wear-resistant powder core that is added with molybdenum Mo, chromium Cr, nickel, boron, silicon Si and iron Fe component and the ferrous alloy powder core-wire material of stainless steel crust, by plasma transferred arc silk material spraying coating process (PTWA) described ferrous alloy powder core-wire material is sprayed on the bore surface of described workpiece, thereby obtains wear-resistant coating.
Here, in specific implementation, also can select other ferrous alloy powder core-wire material, not do restriction here.
The above-mentioned concrete spraying parameter that sprays by plasma transfer silk material electric arc spraying process PTWA is: argon flow amount 50～80L/min, hydrogen flowing quantity 5～20L/min, air pressure is 3～8bar, argon pressure is 8～12bar, and hydrogen pressure is 8～12bar, and wire feed rate is 1～10m/min, electric current 60～100A, voltage 80～120v, revolution 400～700/min feeds the silk amount 20～40mm/s.
By wear-resistant coating and the substrate combinating strength 40～50MPa of above-mentioned processing method preparation, hardness is 400～500HV0.1, porosity 1～5%.
Step 13: prepared wear-resistant coating is carried out the honing processing treatment.
In this step, the workpiece surface that operates in of process above-mentioned steps 12 obtains after the wear-resistant coating, can also carry out the honing processing treatment to prepared wear-resistant coating, makes the rear coating smooth finish of its processing reach Ra0.2-0.8.
The below comes spraying method of the present invention is described with concrete example:
At first before preparation, the aluminium alloy car engine cylinder for certain model carries out pre-treatment to its bore surface, adopts industrial cleaning agent that its bore surface is carried out oil removing and cleans; Behind the cleaning, drying, select 60～80 purpose aluminum oxide sand countercylinder internal surfaces to carry out the blast roughening treatment, workpiece surface roughness is Ra4.0 after the alligatoring.
Then, select and add Mo, Ni, Cr, B, Si, the ferrous alloy powder core-wire material of Fe anti-friction wear-resistant component powder core and stainless steel crust, by PTWA technique this powder cored filament material is sprayed on aluminium alloy car cylinder bore surface, spraying parameter is that argon flow amount is 60L/min, hydrogen flowing quantity is 15L/min, air pressure is 4bar, and argon pressure is 10bar, and hydrogen pressure is 10bar, wire feed rate is 8m/min, electric current 70A, voltage 100v, revolution 500/min, feed silk amount 35mm/s, after the spraying internal surface is carried out honing, smooth finish reaches Ra0.25, thereby obtains wear-resistant coating.
Be illustrated in figure 2 as the coating overall schematic of aluminium alloy cylinder inner wall; Be illustrated in figure 3 as the partial enlarged drawing of the coating of aluminium alloy cylinder inner wall.Above-mentioned prepared coating hardness is 464.3HV0.1, coating and substrate combinating strength 42.9MPa, coating porosity 4.7%.The frictional coefficient that coating and chrome plated piston ring are joined secondary test is 0.126.
In sum, wear-resistant coating by aforesaid method preparation is after honing processing, coat-thickness only has 0.08～0.30mm, coating wt is 0.25kg, and single cylinder loss of weight 0.45kg prepares wear-resistant coating at cylinder inner wall simultaneously, the cylinder inner cavity enlarged diameter, distance between each cylinder will be dwindled, so that the weight of cylinder further reduces, only the weight of an automotive engine component is reduced by at least more than 1.8kg; The wear-resistant coating alloy matrix aluminum has good bonding strength in addition, under the long-term load, the wear-resistant coating difficult drop-off, so conduct heat between coating and the alloy matrix aluminum evenly, the coating distortion that is difficult for being distorted, the reduction of fuel oil consumption and NOx, CO2 discharging can reach 2～4%.
The above; only for the better embodiment of the present invention, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (3)
1. a method for spraying inner wall with novel plasma cored wire is characterized in that, described spraying method comprises:
Workpiece surface is carried out pre-treatment;
Select the stainless steel crust and added the ferrous alloy powder core-wire material of the anti-friction wear-resistant powder core of molybdenum Mo, chromium Cr, nickel, boron, silicon Si and iron Fe component, described ferrous alloy powder core-wire material is sprayed on the bore surface of described workpiece by plasma transferred arc silk material spraying coating process PTWA, obtains wear-resistant coating;
Prepared wear-resistant coating is carried out the honing processing treatment;
Wherein, the described bore surface that described ferrous alloy powder core-wire material is sprayed on described workpiece by plasma transferred arc silk material spraying coating process PTWA, concrete spraying parameter is:
Argon flow amount 50～80L/min, hydrogen flowing quantity 5～20L/min, air pressure is 3～8bar, argon pressure is 8～12bar, hydrogen pressure is 8～12bar, and wire feed rate is 1～10m/min, electric current 60～100A, voltage 80～120v, revolution 400～700/min feeds the silk amount 20～40mm/s.
2. spraying method as claimed in claim 1 is characterized in that, described workpiece surface is carried out pre-treatment, specifically comprises:
Adopt industrial cleaning agent described inner hole of workpiece surface to be carried out oil removing is cleaned and oven dry, carry out the blast roughening treatment again, making the Substrate Surface Roughness after the alligatoring is Ra2.0～4.0.
3. spraying method as claimed in claim 1 or 2 is characterized in that, described prepared wear-resistant coating is carried out after the honing processing treatment, and the smooth finish of the wear-resistant coating after the processing reaches Ra0.2-0.8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011104212886A CN102517536B (en) | 2011-12-15 | 2011-12-15 | Novel plasma powder core wire inner wall spraying method |
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| CN2011104212886A CN102517536B (en) | 2011-12-15 | 2011-12-15 | Novel plasma powder core wire inner wall spraying method |
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| CN102517536A CN102517536A (en) | 2012-06-27 |
| CN102517536B true CN102517536B (en) | 2013-10-16 |
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|---|---|---|---|---|
| BR112016017505A2 (en) * | 2014-01-29 | 2017-08-08 | Mahle Int Gmbh | PISTON WITH COATED PIN HOLE |
| CN105986919B (en) * | 2015-01-28 | 2019-08-27 | 代卫东 | A kind of improved engine cylinder body and its manufacturing process |
| US10138840B2 (en) * | 2015-02-20 | 2018-11-27 | Ford Global Technologies, Llc | PTWA coating on pistons and/or cylinder heads and/or cylinder bores |
| US9945318B2 (en) * | 2015-12-04 | 2018-04-17 | Hyundai Motor Company | Cylinder block |
| CN106499539A (en) * | 2016-10-31 | 2017-03-15 | 中原内配集团股份有限公司 | A kind of low friction undercoating cylinder jacket and preparation method thereof |
| CN106521400B (en) * | 2016-12-27 | 2018-12-11 | 扬州大学 | A kind of plasma transferred arc spraying method for strengthening heavy truck cylinder liner internal wall |
| CN108165917B (en) * | 2017-12-19 | 2020-07-03 | 北京科技大学 | Antifriction and wear-resistant shield tunneling machine tool apron and manufacturing method thereof |
| CN108411240A (en) * | 2018-04-27 | 2018-08-17 | 北京福锐克森热喷涂科技有限公司 | A kind of powder cored filament material and preparation method thereof |
| CN108588620A (en) * | 2018-04-27 | 2018-09-28 | 北京福锐克森热喷涂科技有限公司 | A kind of iron-based amorphous coating and preparation method thereof |
| CN109881138A (en) * | 2019-03-13 | 2019-06-14 | 罗远新 | A kind of protective coating construction technology |
| CN109882306A (en) * | 2019-03-13 | 2019-06-14 | 夏军 | A kind of modified structure for inboard wall of cylinder block |
| CN111778470B (en) * | 2020-07-13 | 2021-04-13 | 中国人民解放军陆军装甲兵学院 | Composite powder and preparation method thereof, self-repairing coating and preparation method and application thereof |
| CN114086106A (en) * | 2021-11-22 | 2022-02-25 | 中国人民解放军陆军装甲兵学院 | Method for preparing ceramic particle reinforced aluminum-based composite coating by plasma transferred arc wire spraying |
| CN115044858B (en) * | 2022-06-12 | 2024-02-06 | 北京工业大学 | Powder core wire for preparing high-wear-resistance iron-based amorphous coating by plasma spraying and coating preparation method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1242720A (en) * | 1997-02-14 | 2000-01-26 | 福特环球技术公司 | Improved plasma transferred wire arc thermal spray apparatus and method |
| US6706993B1 (en) * | 2002-12-19 | 2004-03-16 | Ford Motor Company | Small bore PTWA thermal spraygun |
| CN101492795A (en) * | 2008-01-21 | 2009-07-29 | 安泰科技股份有限公司 | Iron based amorphous nanocrystalline composite coating |
-
2011
- 2011-12-15 CN CN2011104212886A patent/CN102517536B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1242720A (en) * | 1997-02-14 | 2000-01-26 | 福特环球技术公司 | Improved plasma transferred wire arc thermal spray apparatus and method |
| US6706993B1 (en) * | 2002-12-19 | 2004-03-16 | Ford Motor Company | Small bore PTWA thermal spraygun |
| CN101492795A (en) * | 2008-01-21 | 2009-07-29 | 安泰科技股份有限公司 | Iron based amorphous nanocrystalline composite coating |
Non-Patent Citations (2)
| Title |
|---|
| Coating Bores of Light Metal Engine Blocks with a Nanocomposite Material using the Plasma Transferred Wire Arc Thermal Spray Process;K. Bobzin et al;《Journal of Thermal Spray Technology》;20080930;第17卷(第3期);第345页右栏最后1段、第346页左栏第1段、第348页右栏表1和第350页左栏表2 * |
| K. Bobzin et al.Coating Bores of Light Metal Engine Blocks with a Nanocomposite Material using the Plasma Transferred Wire Arc Thermal Spray Process.《Journal of Thermal Spray Technology》.2008,第17卷(第3期),第345页右栏最后1段、第346页左栏第1段、第348页右栏表1和第350页左栏表2. |
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