CN103212596B - Rolling pretreatment process of composite board - Google Patents
Rolling pretreatment process of composite board Download PDFInfo
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- CN103212596B CN103212596B CN201310170414.4A CN201310170414A CN103212596B CN 103212596 B CN103212596 B CN 103212596B CN 201310170414 A CN201310170414 A CN 201310170414A CN 103212596 B CN103212596 B CN 103212596B
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Abstract
The invention discloses a rolling pretreatment process of a composite board, belonging to the technical field of composite board manufacture. The rolling pretreatment process comprises the steps of: forming a combined blank; respectively forming a gas inlet and a gas outlet in two ends of an interface of the combined blank; inflating an inert gas in the interface of the combined blank through the gas inlet; plugging the gas outlet; continuously inflating the inert gas, preserving the pressure under constant pressure; heating the combined blank; connecting the gas inlet with a vacuum pump, and vacuumizing; and arranging a gas storage bag communicated with the interface of the combined blank at the gas inlet, and sealing the interface of the combined blank by the gas storage bag. According to the rolling pretreatment process, the interface of the combined blank is avoided being oxidized; and meanwhile, during hot rolling, little gas remained between the interface of the combined blank and each of two layers of stainless steel interfaces is extruded into the gas storage bag with the movement of a roll and the combined blank, and thus the remained gas is avoided separating a parting agent or oxidizing the interface of the combined blank, and the binding quality of the composite board is ensured.
Description
Technical field
The invention belongs to composite plate preparing technical field, particularly relate to a kind of composite plate rolling pre-treating technology.
Background technology
Composite plate is take carbon steel or low alloy steel as basic unit and the special material such as stainless steel, titanium steel for cladding is combined into, and it has the feature of the mechanical performance of basic unit and the property of cladding and low cost concurrently, is thus widely used in metallurgy and field of petrochemical industry.
At present, preparation composite plate is mainly based on explosion method, and explosion method can make the metal of performance difference great disparity realize compound, but the productivity ratio of the method, lumber recovery and dimensional accuracy are all lower and environmental pollution is serious.
And vacuum rolling method makes its surface be in physics pure state through blanking, surface treatment carbon steel or low alloy steel basic unit and the special material such as stainless steel, titanium steel cladding, under high vacuum condition, assembly rolling forms, effectively can evade the problems such as environmental pollution, the method for vacuum rolling simultaneously production technology substantially increases the production efficiency of composite plate.
But, current vacuum rolling method is by the process of combination base hot rolling, gas is had in compound interface, cause compound interface generation oxidation to a certain degree, and vacuumize and can not produce absolute vacuum, between compound interface and two-layer stainless steel interface, remain few portion gas, gas expansion under hot-rolled state, cannot discharge, have a strong impact on compound interface Percentage bound and bond strength, cause composite plate yield rate lower.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of composite plate rolling pre-treating technology, during to solve existing vacuum rolling method production composite plate, and the technical problem that compound interface binding ability is not good.
For solving the problems of the technologies described above, technical scheme of the present invention is: composite plate rolling pre-treating technology, comprises the following steps:
(1) stack successively one block of parent metal plate, one piece of interface surrounding welding being coated with the plied timber plate of interleaving agent, one block of plied timber plate and one block of parent metal plate are formed combination base;
(2) pore and venthole is driven respectively at the two ends at described combination base interface;
(3) by described air admission hole to described combination base interface filling with inert gas, replace the air in described combination base interface;
(4) venthole described in shutoff;
(5) filling with inert gas is continued, pressurize under constant pressure;
(6) by described combination base heating;
(7) described air admission hole is connected with vavuum pump, vacuumizes;
(8) that establishes a connection described combination base interface at described air inlet position deposits air bag, described in deposit described in air sac sealing and combine base interface.
Improve as one, in step (1), at the peripheral point solid welding deckle edge board of one block of described parent metal plate, then one block of described plied timber plate is put into the cavity of described parent metal plate and side plate formation, the height of described plied timber plate is the half of described side plate height; Then on described plied timber plate, interleaving agent is applied; Then plied timber plate described in another block is put into; Then above described side plate, stack parent metal plate described in another block, parent metal plate described in another block is fixed in spot welding and described side plate forms described combination base; Then combine base described in pressing, and combine base surrounding with described in gas shielded arc welding prewelding simultaneously; Then described combination base erected and rotates, combining base surrounding with described in double wire hidden arc welding downhand welding.
As further improvement, in step (8), described in deposit air bag and comprise the tracheae that open at one end is closed in one end, the opening end of described tracheae is communicated with described combination base interface, and the blind end of described tracheae stretches out described side plate.
As further improvement, in step (8), described tracheae heats away from described air admission hole position, make the described tracheae described blind end of closed formation automatically.
After have employed technique scheme, the invention has the beneficial effects as follows: due to by described air admission hole to described combination base interface filling with inert gas, replaced the air in described combination base interface, thus avoided in subsequent heat process, described combination base interface is oxidized; That simultaneously establishes a connection described combination base interface at described air inlet position deposits air bag, thus when hot rolling, few portion gas residual between compound interface and two-layer stainless steel interface can be deposited in air bag along with the motion of roll and combination base is squeezed into gradually, avoid residual gas and arrange interleaving agent or oxidation compound interface, thus ensure that composite plate bond quality.
Due in step (8), described tracheae heats away from described air admission hole position, make the described tracheae described blind end of closed formation automatically, avoid vacuum effectiveness and lost efficacy; Tracheae has enough deposits headroom, in the hot rolling, ensure that and all residual gas are entered tracheae.
Accompanying drawing explanation
Fig. 1 is the structural representation of combination base;
In figure: 1, parent metal plate, 2, interleaving agent, 3, plied timber plate, 4, side plate, 5, deposit air bag, 51, tracheae, 511, opening end, 512, blind end.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in Figure 1, composite plate rolling pre-treating technology, comprises the following steps:
(1) the interface surrounding welding of plied timber plate 3, the one block of plied timber plate 3 and one block of parent metal plate 1 that stack successively one block of parent metal plate 1, a piece are coated with interleaving agent 2 forms combination base, the specifically optional peripheral point solid welding deckle edge board 4 being used in one block of parent metal plate 1, then one block of plied timber plate 3 is put into the cavity that parent metal plate 1 and side plate 4 are formed, the height of plied timber plate 3 is half of side plate 4 height; Then on plied timber plate 3, interleaving agent 2 is applied; Then another block plied timber plate 3 is put into; Then above side plate 4, stack another block parent metal plate 1, another block parent metal plate 1 is fixed in spot welding and side plate 4 forms this combination base; Then this combination base of pressing is to eliminate bonding gap, and uses this combination base surrounding of gas shielded arc welding prewelding simultaneously; Then this combination base erected and rotates, to adopt this combination base surrounding of double wire hidden arc welding downhand welding, reaching and seal and there is higher-strength;
Parent metal plate 1 comprises carbon steel sheet, certain parent metal plate 1 also can be alloy-steel plate, plied timber plate 3 comprises corrosion resistant plate, and certain plied timber plate 3 can be also titanium steel plate etc., and the effect of interleaving agent 2 is that the composite plate after being convenient to rolling is effectively separated into two pieces or two volumes;
(2) pore and venthole is driven respectively at the two ends at this combination base interface;
(3) by air admission hole to this combination base interface filling with inert gas, replace the air in this combination base interface, avoid this combination base interface in subsequent heat process and be oxidized, inert gas refers to the inactive gas of chemical property, as nitrogen, helium etc.;
(4) shutoff venthole;
(5) filling with inert gas is continued, pressurize under constant pressure;
(6) this combination base is heated;
(7) air admission hole is connected with vavuum pump, vacuumizes;
(8) that establishes this combination base interface of a connection at air inlet position deposits air bag 5, deposit air bag 5 and seal this combination base interface, when hot rolling, few portion gas residual between compound interface and two-layer stainless steel interface can be deposited in air bag 5 along with the motion of roll and this combination base is squeezed into gradually, avoid residual gas and arrange interleaving agent 2 or oxidation compound interface, thus ensure that composite plate bond quality;
Deposit air bag 5 and comprise the tracheae 51 that open at one end is closed in one end, the opening end 511 of tracheae 51 is communicated with this combination base interface, and tracheae 51 heats away from air admission hole position, makes tracheae 51 closed formation blind end 512 automatically, avoids vacuum effectiveness and lost efficacy; The blind end 512 of tracheae 51 stretches out side plate 4, and tracheae 51 has enough deposits headroom, in the hot rolling, ensure that and all residual gas are entered tracheae 51.
Embodiment one:
(1) at the side plate 4 of the peripheral point solid welding fixed width 50mm × thick 20mm × long 5950mm of one piece of wide 1500mm × thick 100mm × long 6000mm carbon steel sheet, then the corrosion resistant plate of one piece of wide 1400mm × thick 10mm × long 5900mm is put into the cavity of this carbon steel sheet and side plate 4 formation; Then on this corrosion resistant plate, interleaving agent 2 is applied; Then the corrosion resistant plate of the wide 1400mm of another block × thick 10mm × long 5900mm is put into; Then above side plate 4, stack the carbon steel sheet of the wide 1500mm of another block × thick 100mm × long 6000mm, the combination base that the carbon steel sheet of the wide 1500mm of another block × thick 100mm × long 6000mm and side plate 4 form wide 1500mm × thick 220mm × long 6000mm is fixed in spot welding; Then the combination base of pressing this wide 1500mm × thick 220mm × long 6000mm is to eliminate bonding gap, and uses the combination base surrounding of gas shielded arc welding prewelding this wide 1500mm × thick 220mm × long 6000mm simultaneously; Then the combination base of this wide 1500mm × thick 220mm × long 6000mm erected and rotates, to adopt the combination base surrounding of double wire hidden arc welding downhand welding this wide 1500mm × thick 220mm × long 6000mm, reaching and seal and there is higher-strength;
(2) pore and venthole is driven respectively at the two ends at the combination base interface of wide 1500mm × thick 220mm × long 6000mm;
(3) air admission hole is connected with source nitrogen, valve is provided with between air admission hole and source nitrogen, by the combination base interface inflated with nitrogen of air admission hole to wide 1500mm × thick 220mm × long 6000mm, replace the air in the combination base interface of wide 1500mm × thick 220mm × long 6000mm;
(4) shutoff venthole, can adopt the mode of welding;
(5) continue inflated with nitrogen, the combination base interfacial pressure to wide 1500mm × thick 220mm × long 6000mm reaches 1MPa, pressurize at this pressure, to check the welding quality of side plate 4;
(6) after the assay was approved, the combination base of wide 1500mm × thick 220mm × long 6000mm is moved in heating furnace by power carrying roller carry out being heated to 500 DEG C;
(7) air admission hole is connected with vavuum pump, vacuumizes;
(8) tracheae 51 at the combination base interface of a connection wide 1500mm × thick 220mm × long 6000mm is established at air inlet position, the opening end 511 of tracheae 51 is communicated with this combination base interface, tracheae 51 heats away from air admission hole position, make tracheae 51 closed formation blind end 512 automatically, avoid vacuum effectiveness to lose efficacy, the blind end 512 of tracheae 51 stretches out side plate 4, tracheae 51 seals the combination base interface of this wide 1500mm × thick 220mm × long 6000mm, when hot rolling, few portion gas residual between compound interface and two-layer stainless steel interface can be squeezed in tracheae 51 along with the motion of the combination base of roll and this wide 1500mm × thick 220mm × long 6000mm gradually, avoid residual gas and arrange interleaving agent 2 or oxidation compound interface, thus ensure that composite plate bond quality.
Embodiment two:
(1) at the side plate 4 of the peripheral point solid welding fixed width 50mm × thick 60mm × long 9950mm of one piece of wide 2200mm × thick 300mm × long 10000mm carbon steel sheet, then the corrosion resistant plate of one piece of wide 2100mm × thick 30mm × long 9900mm is put into the cavity of this carbon steel sheet and side plate 4 formation; Then on this corrosion resistant plate, interleaving agent 2 is applied; Then the corrosion resistant plate of the wide 2100mm of another block × thick 30mm × long 9900mm is put into; Then above side plate 4, stack the carbon steel sheet of the wide 2200mm of another block × thick 300mm × long 10000mm, the combination base that the carbon steel sheet of the wide 2200mm of another block × thick 300mm × long 10000mm and side plate 4 form wide 2200mm × thick 660mm × long 10000mm is fixed in spot welding; Then the combination base of pressing this wide 2200mm × thick 660mm × long 10000mm is to eliminate bonding gap, and uses the combination base surrounding of gas shielded arc welding prewelding this wide 2200mm × thick 660mm × long 10000mm simultaneously; Then the combination base of this wide 2200mm × thick 660mm × long 10000mm erected and rotates, to adopt the combination base surrounding of double wire hidden arc welding downhand welding this wide 2200mm × thick 660mm × long 10000mm, reaching and seal and there is higher-strength;
(2) pore and venthole is driven respectively at the two ends at the combination base interface of wide 2200mm × thick 660mm × long 10000mm;
(3) air admission hole is connected with source nitrogen, valve is provided with between air admission hole and source nitrogen, by the combination base interface inflated with nitrogen of air admission hole to wide 2200mm × thick 660mm × long 10000mm, replace the air in the combination base interface of wide 2200mm × thick 660mm × long 10000mm;
(4) shutoff venthole, can adopt the mode of welding;
(5) continue inflated with nitrogen, the combination base interfacial pressure to wide 2200mm × thick 660mm × long 10000mm reaches 1MPa, pressurize at this pressure, to check the welding quality of side plate 4;
(6) after the assay was approved, the combination base of wide 2200mm × thick 660mm × long 10000mm is moved in heating furnace by power carrying roller carry out being heated to 500 DEG C;
(7) air admission hole is connected with vavuum pump, vacuumizes;
(8) tracheae 51 at the combination base interface of a connection wide 2200mm × thick 660mm × long 10000mm is established at air inlet position, the opening end 511 of tracheae 51 is communicated with this combination base interface, tracheae 51 heats away from air admission hole position, make tracheae 51 closed formation blind end 512 automatically, avoid vacuum effectiveness to lose efficacy, the blind end 512 of tracheae 51 stretches out side plate 4, tracheae 51 seals the combination base interface of this wide 2200mm × thick 660mm × long 10000mm, when hot rolling, few portion gas residual between compound interface and two-layer stainless steel interface can be squeezed in tracheae 51 along with the motion of the combination base of roll and this wide 2200mm × thick 660mm × long 10000mm gradually, avoid residual gas and arrange interleaving agent 2 or oxidation compound interface, thus ensure that composite plate bond quality.
The composite plate rolling pre-treating technology that the embodiment of the present invention provides, due to by air admission hole to this combination base interface filling with inert gas, replaced the air in this combination base interface, thus avoided in subsequent heat process, this combination base interface is oxidized; That simultaneously establishes this combination base interface of a connection at air inlet position deposits air bag 5, thus when hot rolling, few portion gas residual between compound interface and two-layer stainless steel interface can be deposited in air bag 5 along with the motion of roll and this combination base is squeezed into gradually, avoid residual gas and arrange interleaving agent or oxidation compound interface, thus ensure that board quality.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. composite plate rolling pre-treating technology, is characterized in that, comprises the following steps:
(1) stack successively one block of parent metal plate, one piece of interface surrounding welding being coated with the plied timber plate of interleaving agent, one block of plied timber plate and one block of parent metal plate are formed combination base, concrete, at the peripheral point solid welding deckle edge board of one block of described parent metal plate, then one block of described plied timber plate is put into the cavity of described parent metal plate and side plate formation, the height of described plied timber plate is the half of described side plate height; Then on described plied timber plate, interleaving agent is applied; Then plied timber plate described in another block is put into; Then above described side plate, stack parent metal plate described in another block, parent metal plate described in another block is fixed in spot welding and described side plate forms described combination base; Then combine base described in pressing, and combine base surrounding with described in gas shielded arc welding prewelding simultaneously; Then described combination base erected and rotates, combining base surrounding with described in double wire hidden arc welding downhand welding;
(2) drive pore in the one end at described combination base interface, the other end outputs pore;
(3) by described air admission hole to described combination base interface filling with inert gas, replace the air in described combination base interface;
(4) venthole described in shutoff;
(5) filling with inert gas is continued, pressurize under constant pressure;
(6) by described combination base heating;
(7) described air admission hole is connected with vavuum pump, vacuumizes;
(8) that establishes a connection described combination base interface at described air inlet position deposits air bag, described in deposit described in air sac sealing and combine base interface.
2. composite plate rolling pre-treating technology according to claim 1, it is characterized in that, in step (8), described in deposit air bag and comprise the tracheae that open at one end is closed in one end, the opening end of described tracheae is communicated with described combination base interface, and the blind end of described tracheae stretches out described side plate.
3. composite plate rolling pre-treating technology according to claim 2, is characterized in that, in step (8), described tracheae heats away from described air admission hole position, makes the described tracheae described blind end of closed formation automatically.
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| CN103878176A (en) * | 2014-03-12 | 2014-06-25 | 森港机械刀片有限公司 | Method for compositing tool steel and stainless steel through vacuum hot rolling |
| CN104708283B (en) * | 2015-03-06 | 2017-03-08 | 南京润邦金属复合材料有限公司 | A kind of production method of vacuum rolling layer metal composite plate |
| CN104874635A (en) * | 2015-06-16 | 2015-09-02 | 攀钢集团攀枝花钢铁研究院有限公司 | Preparation method of titanium-steel composite plate of high bonding strength with copper as middle layer |
| CN106271414B (en) * | 2016-08-23 | 2018-06-19 | 南京钢铁股份有限公司 | A kind of preparation method of TMCP types bridge stainless steel clad plate |
| CN107234133A (en) * | 2017-04-13 | 2017-10-10 | 华峰日轻铝业股份有限公司 | A kind of method for solving to produce bubble in aluminum matrix composite rolling adhesion process |
| CN108246825A (en) * | 2017-12-25 | 2018-07-06 | 南京钢铁股份有限公司 | A kind of preparation method of TMCP types duplex stainless steel clad plate peculiar to vessel |
| CN110814061A (en) * | 2019-10-22 | 2020-02-21 | 洛阳双瑞金属复合材料有限公司 | Manufacturing method of corrosion-resistant metal composite plate for construction industry |
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