CN1040573C - Welding process for metal plastic tile - Google Patents
Welding process for metal plastic tile Download PDFInfo
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- CN1040573C CN1040573C CN 95117475 CN95117475A CN1040573C CN 1040573 C CN1040573 C CN 1040573C CN 95117475 CN95117475 CN 95117475 CN 95117475 A CN95117475 A CN 95117475A CN 1040573 C CN1040573 C CN 1040573C
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- soldering
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- tile
- unbaked tile
- welding
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Abstract
The present invention relates to welding technology of an elastic layer and a steel tile in an elastic metal plastic tile. The welding technology is characterized in that foil-shaped tin-lead alloy and soldering paste which has strong corrosive activity are used as braze welding material; the braze welding material is welded at a time under the conditions that the pressure is from 90 to 110 kilograms per square centimeter, the temperature is from 240 DEG C to 260 DEG C, and the time of keeping the temperature is from 25 minutes to 35 minutes. The welding technology has the advantages of economization of labor and material, guaranteed quality, compact welding technology, safe and convenient operation, investment economization and shortening of welding processes. The welding technology is suitable for the welding of various specifications of elastic metal plastic tiles in a water wheel machine set and other metallic and non-metallic material.
Description
The present invention relates to a kind of elasticity of plastics layer of elastic metal plastic tile and process for soldering of steel unbaked tile of being used for.
Thrust-bearing and guide bearing in the former hydraulic generator unit are tungsten alloy bush.Tungsten alloy bush 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 elasitic layer is that plastic cover and the hot pressing of copper wire pad form, the arcuation distortion can take place after hot pressing is compound in its expansion coefficient difference, and along with the increase distortion of bearing shell area also increases.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 process for soldering is not suitable for the soldering requirement 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 elasitic layer of hanging scolding tin in advance on the junction plane of the workpiece of preheating, apply less pressure, make it to be combined into integral body.Deficiency is that this technological method needs more optional equipment, and waste material, and soldering again is inhomogeneous, complex operation, poor stability, difficult quality guarantee.
A kind of labor and material saving is provided, guarantees brazing quality, safe and reliable, the technological method of once finishing soldering is a purpose of the present invention.
The present invention is a kind of elasticity of plastics layer of elastic metal plastic tile and process for soldering of steel unbaked tile of being used for, its characteristics are that the step of soldering and operational condition are, surface treatment: the copper wire face of steel unbaked tile and elasticity of plastics layer through the degreasing processing of rust removing, makes its roughness be not less than 80 μ m at the soldering front surface; On the surface of steel unbaked tile and elasticity of plastics layer copper wire face, evenly smear one deck and have severe corrosive paste brazing flux; Layer overlay thickness is the paper tinsel shape tin-lead solder of 0.3~0.5mm on steel unbaked tile after treatment again, copper wire face after will handling again buckles on steel unbaked tile solder, and last integral body is placed on the hot plate of press machine, and hot plate is placed on steel unbaked tile bottom, the single face heating can prevent plastic cover distortion and softening; The press machine pressurization, pressure is decided according to the soldering area, and every square centimeter is 90~110 kilograms, hot plate heating then, temperature is higher 25~60 ℃ than the melt temperature of brazing material, is 240~260 ℃, holding time is 25~35min, and this process for soldering can once be finished in heating, pressurization.
Before being cooled to room temperature, brazing member keeps rated pressure (90~110kg/cm always
2), purpose is to make faying face firm.
The optimum implementation of soldering is that paper tinsel shape tin-lead solder thickness is 0.4mm, and pressure is 100kg/cm
2, holding time is 30min.
The process for soldering of elastic metal plastic tile provided by the present invention mainly is made up of three parts: 1. brazing material is 0.3~0.5mm paper tinsel shape tin-lead solder and the paste brazing flux that has severe corrosive; 2. process for soldering: the 1. surface treatment of soldering work piece, all need remove greasy dirt to steel unbaked tile, elasticity of plastics layer and solder, the passivation that will eliminate rust of steel unbaked tile and elasticity of plastics layer junction plane has the above roughness of 80 μ m; 2. suitable pressure, in order to correct the elasticity of plastics layer of distortion, the gap that makes it to fit with the steel unbaked tile meets the requirement of soldering, and choosing mainly of pressure decided on the soldering area, and general every square centimeter is 90~110 kilograms; 3. brazing temperature increases by 25~60 ℃ according to the melt temperature of brazing material on fusing point, be generally 240~260 ℃, mainly considers it is to reduce heating-up temperature under the brazing material molten state as far as possible, in order to avoid plastic layer is softening, destroys combining of plastic layer and copper wire; 4. holding time, purpose is to make brazing temperature even, joint strength is firm, is generally 30min; 5. be cooled to room temperature under the pressurized state, make faying face firm.3. tooling device: 1. press machine, can be shared with the press machine of compacting elasitic layer; 2. hot plate: be made up of steel plate and electric heating tube, i.e. equidistant boring on steel plate is inserted electric heating tube wherein, the energising heating; 3. axial-flow blower is used for the cooling after the soldering.
The invention solves the problem that combines of elasitic layer and steel unbaked tile in the elastic metal plastic tile, show that through shearing test shearing strength is more than the 23MPa, also has 18MPa in the time of 100 ℃, its joint strength is far longer than actual requirement, and safety coefficient is 8~10 times.In fact which kind of bad working environments no matter machine operation proof plastic made tile be under, though the plastic cover wearing and tearing, watt temperature rise, its face of weld is still as before firm, becomes the most ripe technology in the plastic made tile manufacturing technology, provides powerful guarantee to the safe operation of plastic made tile.Have the assurance brazing quality, soldering processes are simple, and labor and material saving reduces labor intensity, easy-to-operate, and the saving fund shortens the one step completed advantage of brazing process again.
Fig. 1 is the process for soldering erection drawing, wherein: 1. plastic layer; 2. copper wire layer; 3. brazing layer; 4. steel unbaked tile; 5. hot plate; 6. electric heating 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 brazing flux from the teeth outwards, the paper tinsel shape tin-lead solder of the thick 0.4mm of back layer overlay; Elasitic layer copper wire face also will clean up, and evenly smears one deck brazing flux, 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 press machine, 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 electric heating tube and heats.After the unbaked tile temperature rises to 240 ℃, stop heating, insulation 30min then is cooled to room temperature with the axial-flow blower blowing, and elasitic 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 soldering work piece surface treatment, brazing temperature, holding time, brazing material, brazing flux is identical with embodiment 1, and the pressure on its faying face then is 300000kg.
The present invention can be used for the soldering of water wheels unit all size elastic metal plastic tile and the soldering of other metal and nonmetallic material.
Claims (3)
1. one kind is used for the elasticity of plastics layer of elastic metal plastic tile and the process for soldering of steel unbaked tile, it is characterized in that:
A. surface treatment: through the degreasing processing of rust removing, roughness is not less than 80 μ m to the copper wire face of steel unbaked tile and elasticity of plastics layer at the soldering front surface;
B. on the surface of steel unbaked tile and elasticity of plastics layer copper wire face, evenly smear one deck and have severe corrosive paste brazing flux;
C. be the paper tinsel shape tin-lead solder of 0.3~0.5mm at treated steel unbaked tile upper berth one layer thickness, the copper wire face after will handling again buckles on steel unbaked tile solder, and last integral body is placed on the hot plate of press machine, and hot plate is placed on steel unbaked tile bottom;
D. press machine pressurization, pressure is decided according to the soldering area, and every square centimeter is 90~110kg, hot plate heating then, temperature is higher 25~60 ℃ than the melt temperature of brazing material, is 240~260 ℃, and holding time is 25~35min,
2. according to the described process for soldering of claim 1, it is characterized in that before soldering is cooled to room temperature, keeping rated pressure always.
3. according to the described process for soldering of claim 1, it is characterized in that paper tinsel shape tin-lead solder thickness is 0.4mm, pressure is 100kg/cm
2, holding 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 CN1129625A (en) | 1996-08-28 |
CN1040573C true 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 |
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CN (1) | CN1040573C (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008291927A (en) | 2007-05-25 | 2008-12-04 | Toshiba Corp | Sliding material, its manufacturing method, and bearing device |
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
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CN1129625A (en) | 1996-08-28 |
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