CN1377745A

CN1377745A - Hot rolling compounding method for compound stainless steel and carbon steel plate

Info

Publication number: CN1377745A
Application number: CN 01110334
Authority: CN
Inventors: 崔明勋; 崔艳丽; 崔云峰
Original assignee: 崔明勋
Priority date: 2001-04-04
Filing date: 2001-04-04
Publication date: 2002-11-06

Abstract

The present invention aims at solving the problem of raising the quality of compound plate. Plates to be compounded and after surface treatment are riveted to form flat compounding surface and eliminate different factors to affect compounding quality, such as various pollutions to the planes to be compounded, oxidatino, sliding, etc. The present invention has relatively lower requirement in flatness of the compounded surfaces and thus lower cost.

Description

Composite surface fastening type sealing stock stainless steel and carbon steel sheet hot rolling composite algorithm

Present technique invention " composite surface fastening type sealing blank stainless steel and carbon steel sheet hot rolling composite algorithm " relates to the metal material production technical field, is applicable on industrial heat-proof corrosion-resistant such as oil, metallurgy, machinery, boats and ships, food, tobacco and the building and ornament materials.

At present both at home and abroad compound to mainly contain hot rolling compound, cold rolling compound and explode compound for steel plate.

Cold rolling compound the compound of low-melting-point metal that mainly be applicable to possesses limitation such as depressing equipment greatly in addition.

It is compound to explode, though any metal all can be compound, and security, composite quality is difficult to shortcomings such as control.

Hot rolling is compound, mostly is ready the complex method that adopts.It has the sealing blank, low-melting-point metal protection composite surface method and totally-enclosed protective atmosphere method etc.The two kinds of needs special production lines in back, shortcoming such as equipment investment is big.

Sealing blank method, all producible a kind of good method of existing hot rolling mill, but assembling quality requirement height, product quality is difficult to shortcomings such as control.

Therefore, exploitation present technique " composite surface fastening type sealing blank stainless steel and carbon steel sheet hot rolling composite algorithm " has solved the unmanageable problem of composite quality.Adopt special riveting system fastening between the desire composite plate of surface treatment after good when combination promptly is installed, make its applying smooth, eliminated the various pollutions of composite surface, the unequal not bonding factor of oxidation, the while has also been eliminated the problem such as wrinkling of skidding.Greatly facilitate combination, operations such as transportation are installed.The fastening requirement that can relax the composite surface glacing flatness of composite surface has been arranged in addition,, the good news is that more the composite surface quality is effectively guaranteed so can reduce cost greatly.So ancient sealing blank method has had the fastening of composite surface, obtains new life.So it is that each big hot rolling mill of China does not increase equipment, does not change under the existing processes condition, produces the effective ways of various clad steel plates.

The assembling of blank such as Fig. 1, shown in.At first two kinds of compound metal material surface greasy dirts of desire, oxide skin are removed, the air-dry back of pickling base up and down folds separately, uses with the special rivet riveting system of the compound trade mark alloy of the same race of desire fasteningly respectively, and the centre is with interleaving agent, add all around behind the steel bar up and down that base fastens the pressurization welded seal, then assembling finishes.

Blank heating to rolling temperature, be incubated, come out of the stove, on reciprocal milling train hot rolling compound, then join attenuate rolling on the rolling line.Cold back side cut bundling, high pressure water washing is removed lip-deep interleaving agent, then obtains the compound hot rolled plate of a base two volumes.And then pickling and cold-rolling, by the annealing temperature of necessary requirement, then obtain the flat cold-rolled sheet of light in the continous way special atmosphere oven.

Example: the production of 304 stainless steels and carbon steel (A3) composite plate, after handling well, composite surface putting corrosion resistant plate well on the base carbon steel sheet up and down respectively, boring riveting system.Thickly can make ear riveting system if stainless steel is narrow.But otherwise fastening with the direct riveting system of the special rivet of stainless steel of the same race on the wide thin then stainless steel, compound its seam of back of hot rolling can leave no trace from the teeth outwards.Put steel bar well around playing base then, interleaving agent SIO is evenly completed in the centre ₂, or AL ₂O ₃Powder hangs up last base by Fig. 1 and fastens pressurization seam sealing, can get composite surface fastening type hot rolling compound seal blank.Can in base, add an amount of getter iron powder and cast iron powder in order to reduce pressure.

We have made two blanks of 700 * 4300 * 150 composite surface fastening types and 650 * 4300 * 150 in certain steel mill and have generally kept flat not two blanks of fastening type, same stove is heated to 1250 ℃ of 1150 ∽, being incubated 4.5 hours comes out of the stove, hot rolling is compound thick to 22mm on reciprocal milling train, then crop enters to join and rolls, and obtains the 5.8mm roll bending.Cold back side cut bundling, high pressure water washing is removed lip-deep interleaving agent, then obtains a base two volume hot rolling clad steel plates.Advance the face pickling and cold-rolling, 1000 ℃ of annealing in the continous way special atmosphere oven, the flat cold-rolled sheet of the light that obtained 1.2,1.0,0.8mm is thick.

As a result, the fastening type composite effect is fine, and none has problem.But not fastening type some areas are not bonding, and it is more bad particularly to go up the base bonding effect.Fastening type sealing hot rolling blank is described, composite effect is obvious, and quality can be guaranteed, so can improve yield rate greatly, reduces cost.

Claims

The characteristics of " composite surface fastening type sealing blank stainless steel with carbon steel sheet hot rolling composite algorithm " are the special fastening composite surface of rivet of usefulness same material, and it is guaranteed to greatly reduce under the requirement of composite surface glacing flatness the composite surface quality, so can reduce cost greatly.

1. adopted the fastening of composite surface audaciously in the manufacture process of blank; The centre has added interleaving agent SIO ₂, or AL ₂O ₃Again added getter iron powder and cast iron powder in order to reduce pressure an amount of; Add the steel bar pressurization then.
2. hot rolling combination process and mild steel (A3) hot rolling technology indistinction rolls and finishes volume, cold back side cut bundling, and high pressure water washing is removed lip-deep interleaving agent, obtains a base two volume hot rolling clad steel plates.
3. pickling and cold-rolling, 1000 ℃ of annealing in the continous way special atmosphere oven can obtain the cold rolling composite sheet of light.

Obtain general protection more than the requirement.