CN101554678A - Explosive welding method for Monel alloy composite steel plate - Google Patents
Explosive welding method for Monel alloy composite steel plate Download PDFInfo
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- CN101554678A CN101554678A CNA2008102332398A CN200810233239A CN101554678A CN 101554678 A CN101554678 A CN 101554678A CN A2008102332398 A CNA2008102332398 A CN A2008102332398A CN 200810233239 A CN200810233239 A CN 200810233239A CN 101554678 A CN101554678 A CN 101554678A
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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 Monel alloy and a common steel plate so as to have required strength on the premise of ensuring that the composite steel plate has all the advantages of the Monel alloy 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
Monel metal, be a kind of be that matrix adds the alloy that other elements such as copper, iron, manganese form with the metallic nickel.Monel 400 alloys are high-intensity single phase solid solution, are the corrosion resistant alloys that a kind of consumption is big, purposes is wide, combination property is splendid.This alloy also has good corrosion resistance to hot concentrated alkali liquid in hydrofluoric acid and fluorine gas medium, the corrosion of also anti-neutral salt solution, water, seawater, atmosphere, organic compound etc.A key character of this alloy is generally not produce stress corrosion cracking (SCC), and cutting ability is good.
Monel metal has These characteristics, so widely as the container of various corrosivity raw materials or the direct contact surface of pipeline, but, satisfy the needs of intensity again, so monel metal and common metal composite need be used because the market price of monel metal is higher.
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 (being generally trace level), 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 metallic combination to be welded together simple, rapid and strongly in moment.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 Monel alloy composite 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 Monel alloy composite steel plate is characterized in that: may further comprise the steps:
A, base material treatment: smoothing makes steel plate unevenness＜5mm/m; And whole plate face≤10mm/ total length (wide); Tube sheet plate face unevenness＜1.5mm/m; And whole plate face≤2.5mm/ total length (wide); Again with the steel plate horizontal positioned, use emery wheel to polish, remove surface irregularities, make any surface finish, smooth, surface roughness is Ra12.5 μ m, 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 monel metal plate; And whole plate face≤10mm/ total length (wide); Tube sheet plate face unevenness＜1.5mm/m; And whole plate 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 monel metal plate is coated with brushes multiple material protective agent, with the steel plate pairing, place by interruption between pairing back monel metal plate and the steel plate then, avoid direct friction and damage monel metal plate surface;
D, the blast compound: with the steel plate horizontal positioned, the parallel thereon placement of monel metal plate is evenly placed explosive at monel metal plate outer surface, passes through cap sensitive, under high brake pressure, the surface of monel metal plate and 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 Monel alloy composite steel plate is characterized in that: when the material of writing in reply was handled, during monel metal plate thickness 〉=5mm, periphery should be slotted.
The explosion welding method of described Monel alloy composite steel plate is characterized in that: when monel metal plate undersized, spliced before the material of writing in reply is handled.
The explosion welding method of described Monel alloy composite 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 monel metal and general steel plate, thereby guaranteeing that clad steel plate has under the prerequisite of all advantages of monel metal, 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:
Steel plate should have quality certificate, indicates clear; The 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 steel plate four limit dimension lines during line is the right angle.The length of steel plate and width difference are 0-5mm, and the diagonal error is not more than 3mm.
Check the surface quality of steel plate, qualified if the discovery 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 the 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 steel plate plate face unevenness 〉=5mm/m or whole plate face＞10mm/ total length (wide), after smoothing the unevenness of steel plate plate face should＜5mm/m, and whole plate face≤10mm/ total length (wide).
Clad tubesheet should be smoothed during with steel plate plate face unevenness 〉=1.5mm/m or whole plate face＞2.5mm/ total length (wide), after smoothing the unevenness of steel plate plate face should＜1.5mm/m, and whole plate face≤2.5mm/ total length (wide).
Multiple material technology for blanking:
Check material, the specification of monel metal plate.When if the monel metal plate need splice, its splicing requires as follows: when the width of monel metal plate need splice, the splicing width dimensions 〉=300mm of monel metal plate in the time can not satisfying, spliced the width minimum dimension and answers＞250mm in principle; When the length of monel metal plate need be spliced, answered≤L/4 position of center line (L is a monel metal plate total length) the splicing welding joint position of monel metal 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 monel metal 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 monel metal plate thickness 〉=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 can be sheared under the effect of shearing force and come off, the end face of that 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, just can 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 monel metal plate or and should smooth plate face after smoothing during whole plate face＞10mm/ total length (wide); Unevenness＜5mm/m; And whole plate face≤10mm/ total length (wide);
Clad tubesheet should be smoothed during with steel plate plate face unevenness 〉=1.5mm/m or whole plate face＞2.5mm/ total length (wide) with plate face clad tubesheet, after smoothing the unevenness of steel plate plate face should＜1.5mm/m, and whole plate face≤2.5mm/ total length (wide).
The base material technique for grinding:
The buffed surface of steel plate composite surface is wanted evenly not allow defectives such as oxide skin, pit, pit, and will guarantee steel plate thickness.
Thick polishing is with No. 36 grinding wheels when 60mm (steel plate thickness＜) or No. 24 grinding wheels when 60mm (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 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 monel metal plate adopts abrasive band or impeller to polish along the length direction, if monel metal 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 monel metal 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 monel metal plate after the polishing should be smooth, presents metallic luster.
Multiple material protective agent brushing technique:
Substrate of steel plate and the multiple material of monel metal plate are matched, and again with monel metal 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: with the steel plate horizontal positioned, the parallel thereon placement of monel metal plate is evenly placed explosive at monel metal 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 monel metal and 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 " stainless compound steel plate 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.
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 Monel alloy composite steel plate is characterized in that: may further comprise the steps:
A, base material treatment: smoothing makes steel plate unevenness＜5mm/m; And whole plate face≤10mm/ total length (wide); Tube sheet plate face unevenness＜1.5mm/m; And whole plate face≤2.5mm/ total length (wide); Again with the steel plate horizontal positioned, use emery wheel to polish, remove surface irregularities, make any surface finish, smooth, surface roughness is Ra12.5 μ m, 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 monel metal plate; And whole plate face≤10mm/ total length (wide); Tube sheet plate face unevenness＜1.5mm/m; And whole plate 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 monel metal plate is coated with brushes multiple material protective agent, with the steel plate pairing, place by interruption between pairing back monel metal plate and the steel plate then, avoid direct friction and damage monel metal plate surface;
D, the blast compound: with the steel plate horizontal positioned, the parallel thereon placement of monel metal plate is evenly placed explosive at monel metal plate outer surface, passes through cap sensitive, under high brake pressure, the surface of monel metal plate and 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 Monel alloy composite steel plate as claimed in claim 1 is characterized in that: when the material of writing in reply was handled, during monel metal plate thickness 〉=5mm, periphery should be slotted;
3, the explosion welding method of Monel alloy composite steel plate as claimed in claim 1 is characterized in that: monel metal can splice before the material of writing in reply is handled.
4, the explosion welding method of Monel alloy composite steel plate as claimed in claim 1 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 |
|---|---|---|---|
| CNA2008102332398A CN101554678A (en) | 2008-12-08 | 2008-12-08 | Explosive welding method for Monel alloy composite steel plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008102332398A CN101554678A (en) | 2008-12-08 | 2008-12-08 | Explosive welding method for Monel alloy composite steel plate |
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| CN101554678A true CN101554678A (en) | 2009-10-14 |
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| CNA2008102332398A Pending CN101554678A (en) | 2008-12-08 | 2008-12-08 | Explosive welding method for Monel alloy composite steel plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179673A (en) * | 2011-05-11 | 2011-09-14 | 大连沈特电缆有限公司 | Production process for rolling double-sided stainless steel composite thin strip by explosion cladding |
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- 2008-12-08 CN CNA2008102332398A patent/CN101554678A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179673A (en) * | 2011-05-11 | 2011-09-14 | 大连沈特电缆有限公司 | Production process for rolling double-sided stainless steel composite thin strip by explosion cladding |
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Application publication date: 20091014 |