CN101554675A - Explosive welding method for 410S stainless steel and CrMo steel composite steel plate - Google Patents
Explosive welding method for 410S stainless steel and CrMo steel composite steel plate Download PDFInfo
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- CN101554675A CN101554675A CNA2008102332364A CN200810233236A CN101554675A CN 101554675 A CN101554675 A CN 101554675A CN A2008102332364 A CNA2008102332364 A CN A2008102332364A CN 200810233236 A CN200810233236 A CN 200810233236A CN 101554675 A CN101554675 A CN 101554675A
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Abstract
The invention relates to a metal explosion cladding process. The method is characterized by comprising the following steps: base material treatment, composite material treatment, painting and pairing, explosion cladding, repair welding, heat treatment and post treatment. The method can effectively compound 410S stainless steel and a common CrMo steel plate so as to have required strength on the premise of ensuring that the composite steel plate has all the advantages of the 410S stainless steel and to save the using amount of noble metals. Simultaneously, a product provided by the method has high welding quality and ensures long-term stable usage without shedding.
Description
Affiliated technical field
What the present invention relates to is the metallic explosive combination process.
Background technology
410S (0Cr13) ferritic stainless steel has good corrosion resistance, machining property, general higher with operating temperature, and the parts of anticorrosive requirement are arranged again, and as turbine blade, stainless equipment, lining, pressure vessels for the chemical industry etc., also can be as the part of the high tenacity and the load that is hit.
The CrMo steel is a kind of structural steel with high strength, high-ductility and high tenacity.Being one of important steel grade of making station boiler, is again the stock of petrochemical industry container and HTHP hydrogen-contacting equipment, is the steel grade commonly used such as forging, securing member and suspension rod in the boiler.
After 410S stainless steel and CrMo steel are compound, will have range of application widely.
Explosion welding technique is the high-voltage pulse load that produces by explosive detonation, promote the another kind of material (base material) of a kind of material (multiple material) high speed inclined impact, its loading stress is higher than the yield strength of metal material far away, the moment property of loading procedure (generally with millisecond meter), the locality of material stand under load, interweaving occurs in the small adjacent domain of application point and mode such as moves at high speed, realizes the metallurgical binding of two kinds of metals, and the land is rendered as wavy metallurgical binding.Explosive welding is again the new and high technology a kind of of great practical value of carrying out the intermetallic welding and producing metallic composite as the energy with explosive.Its maximum characteristics are two kinds of different metals can be combined in moment, weld together simple, rapid and strongly.The advantage of comparing explosion welding technique with solder technology such as rolling, built-up welding, casting is:
Material adaptability and solderability are applicable to most ductile metal or alloy widely; Especially for the welding of large-area metal, can be described as unique method of attachment; Be not only applicable to the combination of intermiscibility metal, and be applicable to the combination of non-intermiscibility metal, be applicable to the metal and the alloy of compound between easy generation brittle metal yet; Have good thermal conductivity, low interface resistance, the land does not have the heat affected area and constitutes good joint performance, and the thermal process of moment does not have the interface or a spot of dissolving is only arranged.
Summary of the invention
The explosion welding method that the purpose of this invention is to provide a kind of 410S stainless steel and CrMo steel clad steel plate is to remedy the deficiency of prior art.
The object of the present invention is achieved like this: the explosion welding method of 410S stainless steel and CrMo steel clad steel plate is characterized in that: may further comprise the steps:
A, base material treatment: smoothing makes CrMo steel plate unevenness＜5mm/m; And justifying face≤10mm/ total length (wide); Tube sheet plate face unevenness＜1.5mm/m; And justifying face≤2.5mm/ total length (wide); The CrMo steel plate is set level again, used emery wheel to polish, remove surface irregularities, make any surface finish, smooth, surface roughness is Ra12.5 μ m, and it is bright and clean to carry out rubbing down again;
B, multiple material are handled: the plate face unevenness＜5mm/m that guarantees the 410S corrosion resistant plate; And justifying face≤10mm/ total length (wide); Tube sheet plate face unevenness＜1.5mm/m; And justifying face≤2.5mm/ total length (wide); Set level again, use abrasive band or impeller bright and clean along the length polishing;
C, brushing and pairing: the 410S corrosion resistant plate is coated with brushes multiple material protective agent, with the pairing of CrMo steel plate, place by interruption between pairing back 410S corrosion resistant plate and the CrMo steel plate then, avoid direct friction and damage 410S corrosion resistant plate surface;
D, the blast compound: the CrMo steel plate is set level, the parallel thereon placement of 410S corrosion resistant plate is evenly placed explosive at 410S corrosion resistant plate outer surface, passes through cap sensitive, under high brake pressure, the surface of 410S corrosion resistant plate and CrMo steel plate just bonds together firmly;
E, repair welding: explode compound after, clad steel plate detects not through 100%UT that recombination region gives repair welding;
F, heat treatment: the clad steel plate after the repair welding is heat-treated, and to eliminate the stress that explosion time produces, guarantees every performance and the weld seam and the requirements of material decay resistance again such as intensity of base material;
G, subsequent treatment: the clad steel plate after the heat treatment through smoothing, is cut edge, get product behind machine glazed finish or the acid wash passivation.
The explosion welding method of described 410S stainless steel and CrMo steel clad steel plate is characterized in that: when the material of writing in reply was handled, during 410S corrosion resistant plate thickness 〉=5mm, periphery should be slotted;
The explosion welding method of described 410S stainless steel and CrMo steel clad steel plate is characterized in that: when 410S corrosion resistant plate undersized, spliced before the material of writing in reply is handled.
The explosion welding method of described 410S stainless steel and CrMo steel clad steel plate is characterized in that: described multiple material protective agent is a waterglass, and its concentration (° Be) is 16-20.
Beneficial effect
Method provided by the invention can be effectively compound with 410S stainless steel and common CrMo steel plate, thereby guaranteeing that clad steel plate has under the prerequisite of all advantages of 410S stainless steel, had the intensity of needs, thereby saved the use amount of expensive metal.The product that while this method provides has very high welding quality, guarantees that steady in a long-term the use can not come off.
Below by embodiment the present invention is further described:
The specific embodiment
Embodiment:
The base material technology for blanking:
The CrMo steel plate should have quality certificate, indicates clear; To the CrMo steel plate that has Ultrasonic Detection to require, should be qualified through Ultrasonic Detection as requested; The grade of steel of material, specification, examination of materials numbering are consistent with the follow-up of quality card.
By the feed intake specification line of follow-up of quality card, the angle that should guarantee CrMo steel plate four limit dimension lines during line is the right angle.The length of CrMo steel plate and width difference are 0-5mm, and the diagonal error is not more than 3mm.
Check the surface quality of CrMo steel plate, qualified if discovery CrMo surface of steel plate should in time be handled when mass defect is arranged.Carry out gas cutting or shearing by line, allow to stay an amount of reconditioning surplus, shear the back deburr, should remove slag during gas cutting, cut surface should be vertical and smooth bright and clean with CrMo steel plate face, must not scab, defectives such as zigzag, pit, when above-mentioned defective occurring, allow reconditioning to reach the cutting surfacing.
Should smooth when CrMo steel plate plate face unevenness 〉=5mm/m or justifying face＞10mm/ total length (wide), after smoothing the unevenness of CrMo steel plate plate face should＜5mm/m, and justifying face≤10mm/ total length (wide).
Clad tubesheet should be smoothed during with CrMo steel plate plate face unevenness 〉=1.5mm/m or justifying face＞2.5mm/ total length (wide), after smoothing the unevenness of CrMo steel plate plate face should＜1.5mm/m, and justifying face≤2.5mm/ total length (wide).
Multiple material technology for blanking:
Check material, the specification of 410S corrosion resistant plate.When if the 410S corrosion resistant plate need splice, its splicing requires as follows: when the width of 410S corrosion resistant plate need splice, the splicing width dimensions 〉=300mm of 410S corrosion resistant plate in the time can not satisfying, spliced the width minimum dimension and answers＞250mm in principle; When the length of 410S corrosion resistant plate need be spliced, answered≤L/4 position of center line (L is a 410S corrosion resistant plate total length) the splicing welding joint position of 410S corrosion resistant plate.Assembling and spot welding should adopt the welding rod with product welding same model, specification, every 100mm spot welding a bit, and the about 4-6mm of spot welding length.Grinding and buffing weld seam again.
Cleaning roll-type purl machine before unreeling, foreign material that equipment such as plate shearing machine are inside and outside and dust, and the roller of wiping roll-type purl machine if feel will polish smooth with crocus cloth when rough, are used wooden stick and are transmitted when unreeling, prevent 410S corrosion resistant plate surface tear.
Shear is sheared by line, keeps line, deburring again.Plasma cutting keeps line by the line cutting, removes slag, and with grinder buffing scarfing acute angle.
When the multiple material thickness of 410S corrosion resistant plate 〉=5mm, periphery should be slotted: the center line of groove is 10-20mm with the distance of multiple edge line, and the bottom surface of groove is 2-4mm with the distance of the bottom surface of multiple material; Because multiple material is in compound, under the effect of powerful impulsive force, the edge of multiple material is sheared under the effect of shearing force and comes off, the end face of multiple material and base material will be concordant, when the thickness of answering material was big, shearing force was not enough to reach requirement, will influence the edge quality of composite plate, in order to be effective, will be at the desired location fluting so that come off smoothly.Groove is processed on planer or lathe; If, should guarantee the notch size as far as possible with the carbon arc air gouging fluting.Should be coated with the anti-coating that splashes before the gouge, answer the splash and the oxide of sand milling both sides behind the gouge.
Smoothing: the plate face unevenness 〉=5mm/m of 410S corrosion resistant plate or and should smooth plate face after smoothing during justifying face＞10mm/ total length (wide); Unevenness＜5mm/m; And justifying face≤10mm/ total length (wide);
Clad tubesheet should be smoothed during with CrMo steel plate plate face unevenness 〉=1.5mm/m or justifying face＞2.5mm/ total length (wide) with plate face clad tubesheet, after smoothing the unevenness of CrMo steel plate plate face should＜1.5mm/m, and justifying face≤2.5mm/ total length (wide).
The base material technique for grinding:
The buffed surface of CrMo steel plate composite surface is wanted evenly not allow defectives such as oxide skin, pit, pit, and will guarantee CrMo steel plate thickness.
Thick polishing is with No. 36 grinding wheels when 60mm (CrMo steel plate thickness＜) or No. 24 grinding wheels when 60mm (CrMo steel plate thickness 〉=), and discovery oxide skin, pit, pit and polishing when inhomogeneous when slightly polishing polished after should in time handling again; Should in time remove the abrasive dust on polishing surface behind the thick polishing back.Foreign material such as oxide skin, laying dust.
The essence polishing should in time be removed foreign material such as the surperficial iron filings of polishing, laying dust with No. 60 grinding wheels after the smart polishing; Buffed surface after the smart polishing is smooth, bright and clean.Its surface roughness Ra 12.5 μ m.
It is bright and clean that CrMo steel plate plate face after the polishing carries out rubbing down uniformly with stainless steel wire wheel.
Multiple material technique for grinding:
It is bright and clean that the polishing of 410S corrosion resistant plate adopts abrasive band or impeller to polish along the length direction, if 410S corrosion resistant plate surface defectiveness can adopt the abrasive band to polish in the time of need polishing.
Polishing is wanted evenly not allow defectives such as oxide skin, pit, pit to occur, the thickness of the multiple material of revisal 410S corrosion resistant plate.Should in time remove foreign material such as the surperficial abrasive dust of polishing, laying dust after the polishing.
The multiple material surface of 410S corrosion resistant plate after the polishing should be smooth, presents metallic luster.
Multiple material protective agent brushing technique:
CrMo substrate of steel plate and the multiple material of 410S corrosion resistant plate are matched, and again with 410S corrosion resistant plate external coating waterglass, its concentration (° Be) is 16-20, and the foam brush or the spray gun that are coated with waterglass must keep clean.Explode compound before, should strict control base material and multiple material between intermittence, guarantee composite quality.
It is compound to explode: the CrMo steel plate is set level, and the parallel thereon placement of 410S corrosion resistant plate is evenly placed explosive at 410S corrosion resistant plate outer surface, and the explosion velocity of explosive is 1.8 * 10
3-2.2 * 10
3M/s, brisance are that 6-10mm, density are 0.6g/cm
-3-0.85g/cm
-3, by cap sensitive, under high brake pressure, the surface of 410S stainless steel and CrMo steel plate just bonds together firmly.
Repair welding:
Explode compound after, detecting not through 100%UT, recombination region gives repair welding.The compound back Surface Defects in Steel Plate degree of depth is no more than the defective partly of composite plate tolerance and is polished smoothly.
Treating to brush the anti-coating that splashes around the repair welding district in the 100mm scope, on the carbon arc air gouging direction, except that adopting the anti-coating that splashes, the Ying Zuofang dividing plate that splashes also, the splash damage plate surface when not allowing gouge.With carbon arc air gouging will be not the multiple layer of bound fraction remove, then with emery wheel will the gouge surface around polishing clean, and basic unit ground off 0.5-1mm, grind 50-60 degree oblique angle on every side.According to the regulation welding of " the compound CrMo steel plate of stainless steel welding procedure rules ", should adopt Φ 2.5mm welding rod and little electric current to connect a circle after the repair welding of multiple layer, then to reduce the depression at melt run place along melt run.
Repair welding place is earlier smooth with the emery wheel corase grind after the repair welding, then with the sand ribbon polishing, last repair welding place and around in the 100mm scope, should be through UT and PT passed examination.
Technology for Heating Processing:
Clad steel plate after the repair welding is heat-treated, and to eliminate the stress that explosion time produces, guarantees every performance and the weld seam and the requirements of material decay resistance again such as intensity of base material.
Smoothing, trimming technology:
Roll-in smoothing back and forth on seven roller levelling machines or three rolls plate bending machine on the multiple course of composite plate is rule after reaching requirement, shears (composite plate thickness≤20mm) or plasma cutting (composite plate thickness＞20mm) by line again; The peripheral cut surface of composite plate four (circle) should be vertical with the plate face, and defectives such as the peripheral cut surface of composite plate four (circle) should be smooth, smooth, must not scab, zigzag, pit, if there is above-mentioned defective to allow reconditioning to reach requirement.
Mechanical polishing process or acid cleaning process:
Use impeller that the composite plate clad surface is polished or acid wash passivation after get product, the continuous mill line of its clad surface of finished product after the polishing must be consistent.
Claims (4)
1, the explosion welding method of 410S stainless steel and CrMo steel clad steel plate is characterized in that: may further comprise the steps:
A, base material treatment: smoothing makes CrMo steel plate unevenness＜5mm/m; And justifying face≤10mm/ total length (wide); Tube sheet plate face unevenness＜1.5mm/m; And justifying face≤2.5mm/ total length (wide); The CrMo steel plate is set level again, used emery wheel to polish, remove surface irregularities, make any surface finish, smooth, surface roughness is Ra12.5 μ m, and it is bright and clean to carry out rubbing down again;
B, multiple material are handled: the plate face unevenness＜5mm/m that guarantees the 410S corrosion resistant plate; And justifying face≤10mm/ total length (wide); Tube sheet plate face unevenness＜1.5mm/m; And justifying face≤2.5mm/ total length (wide); Set level again, use abrasive band or impeller bright and clean along the length polishing;
C, brushing and pairing: the 410S corrosion resistant plate is coated with brushes multiple material protective agent, with the pairing of CrMo steel plate, place by interruption between pairing back 410S corrosion resistant plate and the CrMo steel plate then, avoid direct friction and damage 410S corrosion resistant plate surface;
D, the blast compound: the CrMo steel plate is set level, the parallel thereon placement of 410S corrosion resistant plate is evenly placed explosive at 410S corrosion resistant plate outer surface, passes through cap sensitive, under high brake pressure, the surface of 410S corrosion resistant plate and CrMo steel plate just bonds together firmly;
E, repair welding: explode compound after, clad steel plate detects not through 100%UT that recombination region gives repair welding;
F, heat treatment: the clad steel plate after the repair welding is heat-treated, and to eliminate the stress that explosion time produces, guarantees the strength character of base material and the requirement of weld seam and multiple material decay resistance;
G, subsequent treatment: the clad steel plate after the heat treatment through smoothing, is cut edge, get product behind machine glazed finish or the acid wash passivation.
2, the explosion welding method of 410S stainless steel as claimed in claim 1 and CrMo steel clad steel plate is characterized in that: when the material of writing in reply was handled, during 410S corrosion resistant plate thickness 〉=5mm, periphery should be slotted;
3, the explosion welding method of 410S stainless steel as claimed in claim 1 and CrMo steel clad steel plate is characterized in that: the 410S stainless steel can splice before the material of writing in reply is handled.
4, the explosion welding method of 410S stainless steel as claimed in claim 1 and CrMo steel clad steel plate is characterized in that: described multiple material protective agent is a waterglass, and its concentration (° Be) is 16-20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102332364A CN101554675A (en) | 2008-12-08 | 2008-12-08 | Explosive welding method for 410S stainless steel and CrMo steel composite steel plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102332364A CN101554675A (en) | 2008-12-08 | 2008-12-08 | Explosive welding method for 410S stainless steel and CrMo steel composite steel plate |
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| CN101554675A true CN101554675A (en) | 2009-10-14 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103350320A (en) * | 2012-12-27 | 2013-10-16 | 华东理工大学 | Production method of corrosion-resistant bimetal composite pipe |
| CN104588862A (en) * | 2014-12-24 | 2015-05-06 | 洛阳双瑞金属复合材料有限公司 | Explosive welding method for superaustenitic stainless steel and chromium-molybdenum steel |
| CN109048110A (en) * | 2018-09-27 | 2018-12-21 | 舞钢神州重工金属复合材料有限公司 | Wide format ferritic stainless steel Explosive Welding production technology |
-
2008
- 2008-12-08 CN CNA2008102332364A patent/CN101554675A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103350320A (en) * | 2012-12-27 | 2013-10-16 | 华东理工大学 | Production method of corrosion-resistant bimetal composite pipe |
| CN103350320B (en) * | 2012-12-27 | 2015-12-09 | 华东理工大学 | A kind of production method of corrosion-resistant dual metal clad tube |
| CN104588862A (en) * | 2014-12-24 | 2015-05-06 | 洛阳双瑞金属复合材料有限公司 | Explosive welding method for superaustenitic stainless steel and chromium-molybdenum steel |
| CN104588862B (en) * | 2014-12-24 | 2017-01-25 | 洛阳双瑞金属复合材料有限公司 | Explosive welding method for superaustenitic stainless steel and chromium-molybdenum steel |
| CN109048110A (en) * | 2018-09-27 | 2018-12-21 | 舞钢神州重工金属复合材料有限公司 | Wide format ferritic stainless steel Explosive Welding production technology |
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Application publication date: 20091014 |