CN102069289B - Preparation method of stainless steel-carbon steel composite board - Google Patents
Preparation method of stainless steel-carbon steel composite board Download PDFInfo
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Abstract
The invention relates to a preparation method of a stainless steel-carbon steel composite board, which belongs to the technical field of material and comprises the following steps: (1) removing and cleaning rusted layers and oxidative layers of stainless steel board material and carbon steel board material; (2) alternately stacking the stainless steel board material and the carbon steel board material; (3) arranging a composite blank between two metal panels to constitute a clamped composite blank, or welding two composite blanks together by electric welding to constitute a combined structure of the composite blank, a blocker and the composite blank, and arranging the combined structure between two metal panels to constitute a clamped composite blank; (4) welding the peripheries of contact surfaces of two adjacent steel boards under a vacuum condition; (5) arranging the composite board in a resistor furnace for heating and heat preservation; and (6) rolling the composite board by a rolling mill. The method disclosed by the invention prolongs the service life and enlarges the application scope of the stainless steel-carbon steel composite board. Compared with an explosive compounding method, the method causes small environmental pollution, and has low requirements on the production environment, in addition, the shape of the board is flat, and the product yield is high.
Description
Technical field
The invention belongs to metallurgical technology field, particularly a kind of preparation method of stainless steel and carbon steel composite plate.
Background technology
Therefore the stainless steel and carbon steel composite plate is widely used in the energy, oil, the many industrial circles of chemical industry because its both stainless corrosion resistance of tool also has carbon steel characteristics cheaply simultaneously concurrently; At present, the method for production stainless steel and carbon steel composite plate mainly contains blast composite algorithm, soldering composite algorithm and roll-bonding method.
The blast composite algorithm is more a kind of method of present domestic application, and this method can be carried out two kinds of two kinds of very big metals of fusing point difference compound, and compoundly accomplishes in moment; Therefore can avoid the interface to generate intermetallic compound; But the composite plate size that this method is produced is less and plate shape is relatively poor, and energy consumption is big, contaminated environment; Lumber recovery is low, and this a series of problem has greatly restricted the use of this method.
The soldering composite algorithm is that a kind of solder is placed between corrosion resistant plate and the carbon steel sheet; Then through heating and apply the method that certain pressure combines stainless steel and carbon steel; This method is easier and environmental pollution is less; But the composite plate boundary strength of this method preparation is generally not high, has therefore greatly limited the use of this method.
Roll-bonding method is divided into cold rolling composite algorithm and hot rolling composite algorithm; Because the interface bond strength of hot rolling composite algorithm is higher, so is main with the hot rolling composite algorithm mainly in the application of roll-bonding method, be about to treat that compound corrosion resistant plate and carbon steel sheet are rolled composite plate after being heated to more than the recrystallization temperature; Yet the hot rolling composite algorithm is owing to be at high temperature to be rolled, and compound interface is easy to oxidation, and the interface of oxidation has greatly reduced interface bond strength.Therefore, produce in the hot rolling composite algorithm on the basis of stainless steel and carbon steel composite plate, people improve the bond strength of compound interface through the method that reduces hot-rolled stainless steel-carbon steel compound interface oxidation.Mainly contain two kinds of methods at present; A kind of is at the nozzle to stainless steel and carbon steel composite plate heating process and operation of rolling installation protective gas, blows the spray argon gas, to slow down the oxidation at interface; But this method only has certain effect to strip, and is then powerless for slab; Another kind method is before compound, with the method for arc welding with stainless steel and carbon steel treat the composite plate face around obturage, carry out heating rolling then, the result finds that still there is oxidation to a certain degree in compound interface, interface shear strength surpasses 300 MPa.
Summary of the invention
Prepare the problem of the technical existence of clad steel plate to existing hot rolling, the present invention provides a kind of preparation method of stainless steel and carbon steel composite plate.
Method of the present invention is carried out according to the following steps:
1, surface treatment: choose corrosion resistant plate material and carbon steel sheet material that side length and width size equates; Rusty scale and oxide layer on side of corrosion resistant plate material and carbon steel sheet material or two sides are removed, will be removed the side cleaning of rusty scale and oxide layer then and dry up;
2, stack: the corrosion resistant plate material is stacked alternately with the carbon steel sheet material is in the same place; The side and the carbon steel sheet material through cleaning of corrosion resistant plate material are relative through the side of cleaning; The side of corrosion resistant plate material is overlapped with the side of carbon steel sheet material, process the composite blank of forming by two-layer above steel plate materials;
3, clamp: when composite blank is made up of the odd-level steel plate materials; Composite blank is placed between two metal plates that are provided with bolt hole; With screw bolt and nut two metal plates are tightened, made between the steel plate materials of composite blank to compress, form and clamp composite blank; When composite blank is made up of the even level steel plate materials; The side of a composite blank applies one deck barrier therein, and the side of another composite blank is placed on the barrier, with electric welding two composite blanks is weldingly fixed on together then; Constitute the combining structure of composite blank-barrier-composite blank; Again this combining structure is placed between two metal plates that are provided with bolt hole, two metal plates is tightened, make between the composite blank of combining structure to compress with screw bolt and nut; And make between the steel plate materials of composite blank and compress, form and clamp composite blank;
4, welding: will clamp composite blank and place vacuum chamber, and be evacuated to air pressure≤1 * 10
-2Pa, and under vacuum condition with welding around the contact-making surface of adjacent two steel plate materialses, make the compound interface sealing between corrosion resistant plate and the carbon steel sheet;
5, heat treatment: will weld the clamping composite blank of accomplishing and place resistance furnace to be heated to 800 ~ 1350 ℃, insulation 6 ~ 300min obtains the heat treatment composite blank;
6, rolling: that the metal plate on the heat treatment composite blank is removed; Clamping composite blank after the heat treatment is used mill milling; Rolling temperature is 880 ~ 1000 ℃, and mill speed is 0.3 ~ 2m/s, and total reduction ratio is 30 ~ 85%; Wherein first percentage pass reduction is 5 ~ 40%, obtains the stainless steel and carbon steel composite plate; When in clamping composite blank, two composite blanks being arranged, earlier with spot welding place excision, again two composite blanks are separated after the rolling completion.
Above-mentioned metal plate is steel plate.
Above-mentioned barrier is selected the SiC powder for use, and the thickness of barrier is 0.1 ~ 2mm.
The compound interface shear strength of the stainless steel and carbon steel composite plate that obtains in the said method>400MPa.
Cleaning is meant with ethanol or acetone and cleans in the said method.
The material of the corrosion resistant plate in the said method is selected austenitic stainless steel, ferritic stainless steel or austenite ferrite dual phase steel for use.
The material of the carbon steel in the said method is selected mild steel or medium carbon steel for use.
In the said method under vacuum condition with adjacent two steel plate contact-making surfaces around the welding be to use electron beam welding.
Method of the present invention is through sealing steel plate materials under high vacuum environment; Make in the composite plate through heating and rolling after can strong bonded; Compare with traditional hot rolling composite algorithm; Can solve the problem of compound interface oxidation, the shear strength of compound interface is brought up to more than the 400MPa from 100MPa, improve the service life and the range of application of stainless steel and carbon steel composite plate; Compare with the blast composite algorithm, method environmental pollution of the present invention is little, and is less demanding to production environment, and plate shape is smooth, and lumber recovery is high.
Description of drawings
Fig. 1 is the composite plate interface micro-organization chart of the embodiment of the invention 1.
The specific embodiment
The corrosion resistant plate material that adopts in the embodiment of the invention is 304 austenitic stainless steels, and the carbon steel sheet material of employing is Q345.
Ethanol that adopts in the embodiment of the invention and acetone are industrial alcohol and industrial acetone.
The SiC powder that adopts in the embodiment of the invention is commercial product.
Embodiment 1
The corrosion resistant plate material is of a size of 500 * 200 * 2mm; The carbon steel sheet material is of a size of 500 * 200 * 10mm; Respectively rusty scale on the side of two corrosion resistant plate materials and oxide layer are removed, will be removed the side of rusty scale and oxide layer then and clean and dry up with ethanol; Rusty scale on two sides of a carbon steel sheet material and oxide layer are removed, will be removed the side of rusty scale and oxide layer then and clean and dry up with ethanol;
Two corrosion resistant plate materials are stacked alternately with the carbon steel sheet material are in the same place; The side and the carbon steel sheet material through cleaning of corrosion resistant plate material are relative through the side of cleaning; The side of corrosion resistant plate material is overlapped with the side of carbon steel sheet material, process the composite blank of forming by 3 layers of steel plate materials;
Composite blank is placed between two metal plates that are provided with bolt hole, two metal plates is tightened, make between the steel plate materials of composite blank to compress, form and clamp composite blank with screw bolt and nut; The metal plate that adopts is a steel plate;
To clamp composite blank and place vacuum chamber, be evacuated to air pressure 1 * 10
-2Pa, and under vacuum condition with use electron beam welding around the contact-making surface of adjacent two steel plate materialses, two contact-making surfaces totally 8 weld seams, and the compound interface between corrosion resistant plate and the carbon steel sheet is sealed;
The clamping composite blank that welding is accomplished places resistance furnace to be heated to 900 ℃, and insulation 30min obtains the heat treatment composite blank;
Metal plate on the heat treatment composite blank is removed, the clamping composite blank after the heat treatment is used mill milling, rolling temperature is 880 ℃; Mill speed is 0.3m/s, and total reduction ratio is 50%, and wherein first percentage pass reduction is 20%; Obtain the stainless steel and carbon steel composite plate of 1000 * 200 * 6mm; Wherein the gross thickness of stainless steel layer is 1mm, and the gross thickness of middle carbon steel layer is 5mm, the compound interface shear strength 460MPa of this composite plate.
Embodiment 2
The corrosion resistant plate material is of a size of 1000 * 200 * 4mm; The carbon steel sheet material is of a size of 1000 * 200 * 10mm; Respectively the rusty scale on the side of two corrosion resistant plate materials and oxide layer are removed, the side that will remove rusty scale and oxide layer then is with acetone and dry up; Rusty scale on two sides of a carbon steel sheet material and oxide layer are removed, and the side that will remove rusty scale and oxide layer then is with acetone and dry up;
The corrosion resistant plate material is stacked alternately with the carbon steel sheet material is in the same place; The side and the carbon steel sheet material through cleaning of corrosion resistant plate material are relative through the side of cleaning; The side of corrosion resistant plate material is overlapped with the side of carbon steel sheet material, process the composite blank of forming by 3 layers of steel plate materials;
Composite blank is placed between two metal plates that are provided with bolt hole, two metal plates is tightened, make between the steel plate materials of composite blank to compress, form and clamp composite blank with screw bolt and nut; The metal plate that adopts is a steel plate;
To clamp composite blank and place vacuum chamber, be evacuated to air pressure 0.5 * 10
-2Pa, and under vacuum condition with use electron beam welding around the contact-making surface of adjacent two steel plate materialses, two contact-making surfaces totally 8 weld seams, and the compound interface between corrosion resistant plate and the carbon steel sheet is sealed;
The clamping composite blank that welding is accomplished places resistance furnace to be heated to 1000 ℃, and insulation 60min obtains the heat treatment composite blank;
Metal plate on the heat treatment composite blank is removed, the clamping composite blank after the heat treatment is used mill milling, rolling temperature is 880 ~ 1000 ℃; Mill speed is 0.5m/s, and total reduction ratio is 40%, and wherein first percentage pass reduction is 10%; Obtain the stainless steel and carbon steel composite plate of 1666 * 200 * 10.8mm; Wherein the gross thickness of stainless steel layer is 2.4mm, and the gross thickness of middle carbon steel layer is 6mm, the compound interface shear strength 440MPa of this composite plate.
Embodiment 3
The corrosion resistant plate material is of a size of 500 * 200 * 1mm; The carbon steel sheet material is of a size of 500 * 200 * 10mm; Respectively rusty scale on the side of corrosion resistant plate material and carbon steel sheet material and oxide layer are removed, will be removed the side of rusty scale and oxide layer then and clean and dry up with ethanol;
Corrosion resistant plate material and carbon steel sheet material are stacked together; The side and the carbon steel sheet material through cleaning of corrosion resistant plate material are relative through the side of cleaning; The side of corrosion resistant plate material is overlapped with the side of carbon steel sheet material, process the composite blank of forming by the two-layered steel plates material;
Prepare two same composite blanks, the side of a composite blank applies one deck barrier therein, and the side of another composite blank is placed on the barrier; Constitute the combining structure of composite blank-barrier-composite blank; Again this combining structure is placed between two metal plates that are provided with bolt hole, two metal plates is tightened, make between the composite blank of combining structure to compress with screw bolt and nut; And make between the steel plate materials of composite blank and compress, form and clamp composite blank; Barrier is the SiC powder, and thickness is 0.1mm; The metal plate that adopts is a steel plate;
To clamp composite blank and place vacuum chamber, be evacuated to air pressure 1 * 10
-2Pa, and under vacuum condition with use electron beam welding around the contact-making surface of two steel plate materialses, the compound interface between corrosion resistant plate and the carbon steel sheet is sealed;
The clamping composite blank that welding is accomplished places resistance furnace to be heated to 1000 ℃, and insulation 50min obtains the heat treatment composite blank;
Metal plate on the heat treatment composite blank is removed, the clamping composite blank after the heat treatment is used mill milling, rolling temperature is 1000 ℃; Mill speed is 2m/s, and total reduction ratio is 50%, and wherein first percentage pass reduction is 30%; Earlier spot welding place is excised after the rolling completion; Again with two composite blanks separately, obtain the stainless steel and carbon steel composite plate of two 1000 * 200 * 5.5mm, wherein the thickness of stainless steel layer is 0.5mm; The gross thickness of carbon steel layer is 5mm, the compound interface shear strength 450MPa of this composite plate.
Embodiment 4
The size of corrosion resistant plate material and carbon steel sheet material is with embodiment 1, surface treatment, stack, clamping and welding method be with embodiment 1;
The clamping composite blank that welding is accomplished places resistance furnace to be heated to 800 ℃, and insulation 300min obtains the heat treatment composite blank;
Metal plate on the heat treatment composite blank is removed; Clamping composite blank after the heat treatment is used mill milling; Rolling temperature is 950 ℃, and mill speed is 2m/s, and total reduction ratio is 85%; Wherein first percentage pass reduction is 40%, the compound interface shear strength 465MPa of the stainless steel and carbon steel composite plate of acquisition.
Embodiment 5
The size of corrosion resistant plate material and carbon steel sheet material is with embodiment 1, surface treatment, stack, clamping and welding method be with embodiment 1;
The clamping composite blank that welding is accomplished places resistance furnace to be heated to 1350 ℃, and insulation 6min obtains the heat treatment composite blank;
Metal plate on the heat treatment composite blank is removed; Clamping composite blank after the heat treatment is used mill milling; Rolling temperature is 980 ℃, and mill speed is 1m/s, and total reduction ratio is 30%; Wherein first percentage pass reduction is 5%, the compound interface shear strength 445MPa of the stainless steel and carbon steel composite plate of acquisition.
Embodiment 6
The size of corrosion resistant plate material and carbon steel sheet material is with embodiment 3, surface treatment, stack, clamping and welding method be with embodiment 3, difference is that the thickness of SiC powder is 2mm;
The clamping composite blank that welding is accomplished places resistance furnace to be heated to 1350 ℃, and insulation 10min obtains the heat treatment composite blank;
Metal plate on the heat treatment composite blank is removed, the clamping composite blank after the heat treatment is used mill milling, rolling temperature is 890 ℃; Mill speed is 0.3m/s; Total reduction ratio is 50%, and wherein first percentage pass reduction is 30%, earlier spot welding place is excised after the rolling completion; Again separately, the compound interface shear strength 455MPa of the stainless steel and carbon steel composite plate of acquisition with two composite blanks.
Claims (4)
1. the preparation method of a stainless steel and carbon steel composite plate is characterized in that carrying out according to the following steps:
(1) chooses corrosion resistant plate material and the carbon steel sheet material that side length and width size equates,, will remove the side cleaning of rusty scale and oxide layer then and dry up rusty scale and the oxide layer removal on side of corrosion resistant plate material and carbon steel sheet material or two sides;
(2) the corrosion resistant plate material is stacked alternately with the carbon steel sheet material is in the same place; The side and the carbon steel sheet material through cleaning of corrosion resistant plate material are relative through the side of cleaning; The side of corrosion resistant plate material is overlapped with the side of carbon steel sheet material, process the composite blank of forming by two-layer above steel plate materials;
(3) when composite blank is made up of the odd-level steel plate materials, composite blank is placed between two metal plates that are provided with bolt hole, with screw bolt and nut two metal plates are tightened, make between the steel plate materials of composite blank to compress, form and clamp composite blank; When composite blank is made up of the even level steel plate materials; The side of a composite blank applies one deck barrier therein, and the side of another composite blank is placed on the barrier, with electric welding two composite blanks is weldingly fixed on together then; Constitute the combining structure of composite blank-barrier-composite blank; Again this combining structure is placed between two metal plates that are provided with bolt hole, two metal plates is tightened, make between the composite blank of combining structure to compress with screw bolt and nut; And make between the steel plate materials of composite blank and compress, form and clamp composite blank;
(4) will clamp composite blank and place vacuum chamber, be evacuated to air pressure≤1 * 10
-2Pa, and under vacuum condition with welding with electron beam around the contact-making surface of adjacent two steel plate materialses, make the compound interface sealing between corrosion resistant plate and the carbon steel sheet;
(5) will weld the clamping composite blank of accomplishing and place resistance furnace to be heated to 800～1350 ℃, insulation 6～300min obtains the heat treatment composite blank;
(6) metal plate on the heat treatment composite blank is removed; Clamping composite blank after the heat treatment is used mill milling; Rolling temperature is 880～1000 ℃, and mill speed is 0.3～2m/s, and total reduction ratio is 30～85%; Wherein first percentage pass reduction is 5～40%, obtains the stainless steel and carbon steel composite plate; When in clamping composite blank, two composite blanks being arranged, earlier with spot welding place excision, again two composite blanks are separated after the rolling completion.
2. the preparation method of a kind of stainless steel and carbon steel composite plate according to claim 1 is characterized in that described barrier selects the SiC powder for use, and the thickness of barrier is 0.1～2mm.
3. the preparation method of a kind of stainless steel and carbon steel composite plate according to claim 1 is characterized in that the compound interface shear strength＞400MPa of described stainless steel and carbon steel composite plate.
4. the preparation method of a kind of stainless steel and carbon steel composite plate according to claim 1; The material that it is characterized in that described corrosion resistant plate is selected austenitic stainless steel, ferritic stainless steel or austenite ferrite dual phase steel for use, and the material of described carbon steel is selected mild steel or medium carbon steel for use.
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