CN1212201C - Method for mfg. sheet metal strip - Google Patents

Abstract

The present invention relates to a forming method for metal strips. The method has the general technology concept that the existing conventional method for making metal strips into metal tubes is changed into a method for making metal tubes into metal strips; mature production technology of metal tubes and uniform and stable structure of the metal tubes result in the preferable performance of metal strips made of the metal tubes. In the metal strip manufacturing method, seamless metal tubes are split, gradually unfolded, calendered and flattened to obtain metal strips; or the seamless metal tubes are split, gradually unfolded, calendered, flattened and then rolled to obtain the metal strips. The metal strips obtained by the method have the advantages of preferable uniformity of mechanical performance, stable mechanical performance and high rate of finished products. A device embodying the method has the advantages of simple structure and low operation cost.

Description

The method of manufactured copper band

Technical field

The present invention relates to a kind of forming method that is used to form sheet metal strip.

Background technology

The manufacture method of traditional sheet metal strip is: with sectional area is the rectangle block, and rolling by passage one by one rolled slab and be as thin as needed final size.In order to obtain final strip product, traditional production method needs hot rolling to combine with cold rolling, needs surface treatment in the operation of rolling, mills face, heat treatment repeatedly etc.Because the cross sectional shape of slab is a rectangle, in casting process, the uniform state of cooling around can not obtaining, the cast sturcture of Zhu Zao slab is inhomogeneous thus, and the grain size at its limit portion and middle part differs, and four arm of angle portions easily crack.Quality to subsequent product in such institutional framework operation of rolling afterwards will have a negative impact, and can make the mechanical performance uniformity of final products relatively poor, and the mechanical performance instability, and lumber recovery is lower.For addressing these problems, need the complicated manufacturing system of configuration, technological process is long, and investment is big, cost is high.In addition, U.S. Pat 3733678 discloses a kind of method of making sheet metal strip, this method is at first carried out a large amount of metallic particles repoussage and is obtained a spindle that hole is arranged, there is the spindle of hole to obtain tubing by extruding this then, then this tubing is vertically cut open, launched, after rolling and obtain sheet metal strip.Though this method also can produce sheet metal strip, but because it is in the process of the spindle that metallic particles is obtained hole through repoussage, though also this spindle is heat-treated, but the melt-casting process that does not but have metal, therefore the compactness of this spindle is poor, even thereby it is rolling that this spindle is carried out the back passage, the compactness of the sheet metal strip that finally obtains also can be poor; And in the whole process of making sheet metal strip, to increase processing cost so greatly through extraneous heating many times.As if the manufacturing that this method is used for copper strip, then made copper strip can not use.

Summary of the invention

The method that the purpose of this invention is to provide the manufactured copper band that a kind of equipment is simple, operating cost is low and lumber recovery is higher.The resulting copper strip thinner thickness of this method, compactness and uniformity are better, mechanical performance is more stable.

The total technical conceive of the present invention is: will have the conventional method of making metal pipe material by sheet metal strip now and change the method for being made sheet metal strip by metal pipe material into, because the metal pipe material production technology very even tissue of maturation and metal pipe material is stable, so the better performances of the sheet metal strip of making by metal pipe material.

The technical scheme that realizes the object of the invention is: the method by horizontal casting causes the slush casting pipe with casting in bronze, then the slush casting pipe of gained is carried out the outer surface peeling and form copper pipe after three-roller planetary rolling mill carries out heavy reduction rolling, launch gradually after again the copper pipe after rolling longitudinally being cut open and roll smooth, after the rolling copper strip that obtains.

Above-mentioned slush casting pipe is a pipe.Cutting open to list stitches of copper pipe after three-roller planetary rolling mill is rolling cut open.

The present invention has positive effect: (1) has the better tissues uniformity because of seamless tubular shaped metal especially seamless circular tubular metal because of shape determines it, so the present invention is raw material with the seamless tubular goods makes band, then uniformity and stability have been brought technical possibility preferably for band has.In the production process of seamless tubular goods, cooling evenly around the heavy wall slush casting pipe, therefore obtain having the pipe of uniform equiaxed grain structure easily, and this structural homogenity will obtain continuity in follow-up pressure processing, and good pipe tissue can bring the uniformity and the stability of band.(2) by method of the present invention, good band becomes comparatively simple to make the manufacturing machine performance.Because the production technology of existing seamless metal tubing is very ripe, in the production process of seamless metal tubing, the manufacturing process of many high-performance tubing is arranged.Production with copper pipe is example, by horizontal casting cathode copper is manufactured the hollow bloom of heavy wall, and it is rolling to enter three-roller planetary rolling mill then after the outer surface peeling; It is 2 millimeters rolled blank that the planetary rolling rolling mill practice of pipe can be rolled into wall thickness cast tube base a time of 20 millimeters with wall thickness, and its a time processing capacity surpasses 80%, even can reach 95%; The aximal deformation value of single pass is rolling to make the dense structure of pipe embryo, evenly; By method of the present invention the corresponding seamless tubular goods of seamless tube blank or outsourcing is cut open, flattened and rolls again and can obtain having the band of excellent properties.(3) equipment of existing production band must comprise the hot-rolling mill of slab caster, costliness and mill face machine etc., and the equipment that embodies method of the present invention is comparatively simple, can obtain the band make-up machine after only need transforming and produce band existing welded tube mill (also can be described as the welded tube unit), and available cold-rolling mill continuation is rolling by the resulting preceding road of band make-up machine band, produces thinner strip product.Therefore, embody equipment simple in structure of method of the present invention, operating cost is also lower.(4) for non-ferrous metal, seamless tubular goods just can obtain accurate outside dimension through the forming method of routines such as rolling, stretching, extruding, spinning, and accurate outside dimension then can guarantee the accuracy of strip width.Therefore, when making sheet metal strip, need not resemble and cut edge repeatedly the manufacture method of traditional sheet metal strip with the inventive method, thus can improve band lumber recovery, and further reduce cost.(5) method of the present invention except that the non-ferrous metal band, also comprises the ferrous metal band applicable to the sheet metal strip of being made corresponding material by the seamless metal tubing of various materials.

The specific embodiment

(embodiment 1)

1, seamless tubular goods is prepared.It is that 85 millimeters, wall thickness are 22.5 millimeters circular hollow casting pipe that method by horizontal casting is cast as external diameter with cathode copper.It is rolling to enter three-roller planetary rolling mill then after outer surface peeling, the heavy reduction by planetary rolling rolling, and making the rolling external diameter that obtains of cast tube base a time is that 48 millimeters, wall thickness are 2.5 millimeters seamless red copper pipes.

2, pipe becomes the band moulding.With the seamless red copper pipe of the corresponding specification of above-mentioned seamless red copper pipe or outsourcing with the method for routines such as machined, laser or plasma cutting with tubing longitudinally singly seam cut open, be that the pipe of critical piece becomes the band shaped device and launches gradually and roll smoothly by unit then, be launched into 142 millimeters of width, thickness and be 2.3 millimeters red copper band with the level of multimachine frame type with holes and perpendicular roller.

For the present invention clearly is described, the equipment that equipment involved in the present invention and conventional welded tube method is related is made comparisons.Common straight seam pipemill (ERW unit) is divided from function, can be divided into three parts in order.First for sheet metal strip progressively flexural deformation make tube of material and provide the band of part driving power to become pipe forming apparatus; Second portion is that tube of material is welded the welder of making pipe; Third part is that pipe is carried out shaping is determined size (being exactly school circle sizing) and driving power is provided for circular pipe blank apparatus for shaping.It all is to be the device of critical piece with the horizontal roller of multimachine frame type with holes and the unit of perpendicular roller that wherein band becomes pipe forming apparatus and apparatus for shaping, between the horizontal roller on the former the same frame and the pass between the perpendicular roller on the same frame gradually change, make metal material by the band shape become tubular gradually; And between the horizontal rod on the latter's the same frame and the pass between the perpendicular roller on the same frame be that size is determined in the welded tube shaping.

When the equipment of design indicates method of the present invention, above-mentioned welded tube mill can be carried out corresponding transformation and carry out the adjustment of relevant size, become the reverse procedure operation of pipe by band, and obtain embodying the band make-up machine of the inventive method.Wherein: the one, with the apparatus for shaping of welded tube mill conveying device as the band make-up machine, and with the tubing output of the apparatus for shaping tubing input as the conveying device of band make-up machine; The 2nd, the welder of welded tube mill is removed, and vertical single seam is set on corresponding position dissects device, the cutting form that this vertically single seam dissects device can adopt the forms such as machined, laser or plasma cutting in the routine techniques; The 3rd, the band change pipe forming apparatus of welded tube mill is with shaped device as the pipe change of band make-up machine, and becomes the band output of the band input of pipe forming apparatus as the pipe change band shaped device of band make-up machine with the band of welded tube mill.So, the band make-up machine that is used to embody the inventive method in use, metal pipe material is from the input access arrangement of the conveying device of band make-up machine; Under the dynamic action of conveying device, march to vertical single seam and dissect the device place, under the effect of dissecing device, form vertically single seam; Cut pipe open and continue to march to the tubing input that pipe becomes the band shaped device, become at pipe cut open under the effect of horizontal roller and the unit of edger roll of multimachine frame type with holes of band shaped device pipe launch gradually and roll smooth and and become band, become by pipe and be with the band output of shaped device to leave equipment.

(embodiment 2)

Get the band that embodiment 1 obtains, press the thickness of actual needs, passage is cold rolling after the warp, produces the thin red copper band of a certain definite thickness of thickness in 0.003 millimeter to 0.5 millimeter scope.

Claims (3)

1, a kind of method of manufactured copper band, it is characterized in that: the method by horizontal casting causes the slush casting pipe with casting in bronze, then the slush casting pipe of gained is carried out the outer surface peeling and form copper pipe after three-roller planetary rolling mill carries out heavy reduction rolling, launch gradually after again the copper pipe after rolling longitudinally being cut open and roll smooth, after the rolling copper strip that obtains.

2, the method for manufactured copper band according to claim 1 is characterized in that: the slush casting pipe is a pipe.

3, the method for manufactured copper band according to claim 1 is characterized in that: cutting open to list stitches of the copper pipe after three-roller planetary rolling mill is rolling cut open.