CN1129625A - Welding process for metal plastic tile - Google Patents
Welding process for metal plastic tile Download PDFInfo
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- CN1129625A CN1129625A CN 95117475 CN95117475A CN1129625A CN 1129625 A CN1129625 A CN 1129625A CN 95117475 CN95117475 CN 95117475 CN 95117475 A CN95117475 A CN 95117475A CN 1129625 A CN1129625 A CN 1129625A
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Abstract
The technology for welding the elastic layer with steel bush blank in elastic metal-plastic bush features that Sn-Pb alloy foil and strong corrosive soldering tin paste are used for one-pass solderingat 240-260 deg.C and 90-110 Kg/sq.cm. The said temp is maintained for 25-35 min. Its advantages include simple process, high welding quality and low cost. It is also suitable for welding metallic with non-metallic materials.
Description
The invention belongs to the category of soldering in the welding technology field, relate to the welding procedure of the metal plastic tile of hydraulic generator unit.
Thrust bearing and guide shaft in the former hydraulic generator unit are babbitt block.Babbitt block is poor because of its operational reliability, installation and maintenance are complicated is eliminated gradually, the substitute is the advanced composite material (ACM) elastic metal plastic tile, has also just produced the process issues of this watt thereupon.Elastic metal plastic tile mainly is made up of elasticity of plastics layer and steel unbaked tile.Because of elastic layer is that plastic cover and copper wire pad pressure form, the arcuation distortion can take place after ripe pressure is compound in its coefficient of expansion difference, and along with also increase is out of shape in the increase of bearing shell area.The bearing shell area is little then two or three hundred square centimeters, and greatly then more than two or three thousand square centimeters, compound difficulty is very big.Traditional soldering processes are not suitable for the welding requirements of elastic metal plastic tile very much.For soldering larger area weldment, adopt usually and water molten method, as CN931088869A, be about to brazing material in cut-and-dried pot behind the heating and melting, pour, put the elastic layer of hanging scolding tin in advance on the faying face of the workpiece of preheating, apply less pressure, make it to be combined into integral body.Weak point is, this method needs more optional equipment, waste material again, and weld inhomogeneous, complex operation, poor stability, difficult quality guarantee.
A kind of labor and material saving is provided, guarantees welding quality, safe and reliable, the technology of once finishing welding is purpose of the present invention.
The present invention is a kind of welding procedure that is used for elastic metal plastic tile elastic layer and steel unbaked tile, is characterized in that brazing material is a paper tinsel shape leypewter, and thickness is 0.3～0.5mm, is layered on the solder side equably; Brazing flux is the paste solder(ing) paste of band severe corrosive, and the corrosion solder side makes scolder and surface of the work fused; Steel unbaked tile and elastic layer must be through surface treatments before welding, the degreasing rust cleaning, and roughness is not less than 80 μ m; Welding pressure is generally 90～110 kilograms every square centimeter according to bonding area and definite; Heating-up temperature is to determine according to the melt temperature of brazing material, increases by 25～60 ℃ on fusing point, is 240～260 ℃, in order to avoid plastic layer is softening, the destruction plastic layer combines with the copper wire layer; Temperature retention time is 25～35 minutes, is to make brazing temperature even, and strength of joint is firm.
Before being cooled to room temperature, weldment keeps rated pressure (90～110kg/cm always
2), purpose is to make faying face firm.
Adopt heating plate (steel plate) to be placed on single face heating under the steel unbaked tile during heating, can prevent plastic cover distortion and softening.
During welding, be that heating, pressurization and welding are once finished, manufacture craft is simple.
The optimum implementation of welding is that paper tinsel shape leypewter thickness is 0.4mm, and pressure is 100kg/cm
2, temperature retention time is 30min.
The welding of elastic metal plastic tile provided by the present invention mainly is made up of three parts: one, welding material is 0.3～0.5mm paper tinsel shape leypewter and the paste solder(ing) paste that has severe corrosive; Two, welding procedure: the 1. surface treatment of welding work pieces, all need remove greasy dirt to steel unbaked tile, elastic layer and solder, the passivation that will eliminate rust of steel unbaked tile and elastic layer faying face has the above roughness of 80 μ m; 2. suitable pressure, in order to correct the elastic layer of distortion, the gap that makes it to fit with the steel unbaked tile meets requirement of welding, and choosing mainly of pressure decided on bonding area, and general every square centimeter is 90～110 kilograms; 3. welding temperature increases by 25～60 ℃ on the melt temperature fusing point according to brazing material, is generally 240～260 ℃, and main consideration is to reduce heating-up temperature under the brazing material molten condition as far as possible, in order to avoid plastic layer is softening, the destruction plastic layer combines with copper wire; 4. temperature retention time, purpose is to make brazing temperature even, strength of joint is firm, is generally 30 minutes; 5. be cooled to room temperature under the pressurized state, make faying face firm.Three, tooling device: 1. forcing press, can be shared with the forcing press of compacting elastic layer; 2. hot plate: be made up of steel plate and electrothermal tube, i.e. equidistant boring on steel plate is inserted electrothermal tube wherein, the energising heating; 3. axial flow blower, the cooling after being used to weld.
Accompanying drawing is the welding procedure installation diagram, wherein 1. plastic layers; 2. copper wire layer; 3. brazing layer; 4. steel unbaked tile; 5. ripe plate; 6. electrothermal tube.
Be illustrated below in conjunction with embodiment:
Embodiment 1: make 300cm
2Elastic metal plastic tile.Earlier the steel unbaked tile is polished into the surface that roughness is not less than 80 μ m, washes greasy dirt and dust, evenly smear one deck solder(ing) paste from the teeth outwards, the paper tinsel shape leypewter of the thick 0.4mm of back layer overlay; Elastic layer copper wire face also will clean up, and evenly smears one deck solder(ing) paste, the copper wire face is buckled on steel unbaked tile solder again, and last integral body is placed on heating pressurization on the hot plate of forcing press, and hot plate is placed on the heating of steel unbaked tile bottom, can prevent plastic cover distortion and softening.Pressure rises to 30000kg, connects electrothermal tube and heats.After the unbaked tile temperature rises to 240 ℃ of welding temperatures, stop heating, be incubated 30 minutes, then drying with axial flow blower is cooled to room temperature, and elastic layer and steel unbaked tile will become a firm integral body.Last pressure relief is taken out plastic made tile.
Embodiment 2: make 3000cm
2Elastic metal plastic tile, its welding work pieces surface treatment, welding temperature, temperature retention time, brazing material, brazing flux is identical with embodiment 1, and the pressure on its solder side then is 300000kg.
The invention solves elastic metal plastic tile Elastic layer and steel unbaked tile in conjunction with problem, through shearing test Show that shearing strength is more than the 23MPa, also has 18MPa in the time of 100 ℃, its strength of joint is far longer than reality Requirement, safety coefficient are 8～10 times. In fact which kind of bad working environments no matter machine operation proof plastic made tile be in Lower, though the plastic cover wearing and tearing, watt temperature rise, its solder side is still as before firm, becomes plastic made tile and makes skill The most ripe technology in the art provides powerful guarantee to the safe operation of plastic made tile. Have the assurance welding quality, Welding procedure is simple, and labor and material saving reduces labour intensity, easy-to-operate, and the saving fund shortens again weldering The one step completed advantage of termination process.
The present invention can apply to welding and other metal and non-of water wheels unit all size elastic metal plastic tile The welding of metal material.
Claims (5)
1. welding procedure that is used for the elastic layer and the steel unbaked tile of elastic metal plastic tile is characterized in that:
A. brazing material: be paper tinsel shape leypewter, thickness 0.3～0.5mm;
B. brazing flux: for having the solder(ing) paste of severe corrosive paste;
C. surface treatment: steel unbaked tile and elastic layer must be through the degreasing processing of rust removing before welding, and be coarse
Degree is not less than 80 μ m;
D. pressure: decide according to bonding area, every square centimeter is 90～110kg;
E. heating: according to the melt temperature of brazing material, on its fusing point, increase by 25～60 ℃, for
240～260℃；
F. temperature retention time: 25～35min.
2. according to the described welding procedure of claim 1, it is characterized in that before welding is cooled to room temperature, keeping rated pressure always.
3. according to the described welding procedure of claim 1, it is characterized in that adopting hot plate single face heating;
4. according to claim 1 or 2 or 3 described welding procedures, it is characterized in that heating, pressurize and weld and once finish.
5. according to the described welding procedure of claim 1, it is characterized in that paper tinsel shape leypewter thickness is 0.4mm, pressure is 100kg/cm
2, temperature retention time is 30min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95117475 CN1040573C (en) | 1995-11-21 | 1995-11-21 | Welding process for metal plastic tile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95117475 CN1040573C (en) | 1995-11-21 | 1995-11-21 | Welding process for metal plastic tile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1129625A true CN1129625A (en) | 1996-08-28 |
| CN1040573C CN1040573C (en) | 1998-11-04 |
Family
ID=5081262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95117475 Expired - Fee Related CN1040573C (en) | 1995-11-21 | 1995-11-21 | Welding process for metal plastic tile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1040573C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8231276B2 (en) | 2007-05-25 | 2012-07-31 | Kabushiki Kaisha Toshiba | Sliding material, method of manufacturing same and bearing assembly |
| CN101607331B (en) * | 2008-06-19 | 2012-10-24 | 辽源市科学技术研究所有限公司 | Method for brazing surface and steel matrix of elastic metal plastic bearing shell |
| CN112192920A (en) * | 2020-10-13 | 2021-01-08 | 安徽环嘉天一再生资源有限公司 | High-elasticity wear-resistant recycled plastic tile and preparation method thereof |
-
1995
- 1995-11-21 CN CN 95117475 patent/CN1040573C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8231276B2 (en) | 2007-05-25 | 2012-07-31 | Kabushiki Kaisha Toshiba | Sliding material, method of manufacturing same and bearing assembly |
| CN101607331B (en) * | 2008-06-19 | 2012-10-24 | 辽源市科学技术研究所有限公司 | Method for brazing surface and steel matrix of elastic metal plastic bearing shell |
| CN112192920A (en) * | 2020-10-13 | 2021-01-08 | 安徽环嘉天一再生资源有限公司 | High-elasticity wear-resistant recycled plastic tile and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1040573C (en) | 1998-11-04 |
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