CN1695839B

CN1695839B - Roller trio skew rolling method for cold perforating and cold chambering ingot

Info

Publication number: CN1695839B
Application number: CN 200510064481
Authority: CN
Inventors: 张士新
Original assignee: BAOLUO COPPER MATERIAL Co Ltd JIANGSU
Current assignee: BAOLUO COPPER MATERIAL Co Ltd JIANGSU
Priority date: 2004-08-17
Filing date: 2005-04-19
Publication date: 2010-07-07
Anticipated expiration: 2025-04-19
Also published as: CN1695839A

Abstract

The present invention discloses a roller trio skew rolling method for cold perforating and cold chambering ingot, wherein surface of three rollers of the roller trio skew rolling machine is arranged to be structure having multi-groove, projecting loop, and large distortion zone is formed among the three rollers; casting blank to be processed is transmitted to the large distortion zone among the three rollers to be rolled, meantime, head of the head mechanism is transmitted into the process section; three rollers are rotated at same time to activate the rotation of the rolled piece to produce spire movement and project the processing casting blank. The invention overcomes the defect of pure hot rolling, additional heating device is unnecessary, which saves the equipment advertisement and energy consumption, and achieves perforating and chambering ingot of cold perforating and cold chambering ingot, and roll scale is not produced on the rolling piece.

Description

Ingot casting is cold to be worn, the roller trio skew rolling method of cold reaming

Technical field:

The present invention relates to a kind of metallurgy rolling method.

Background technology:

Rolling processing method from present domestic and international production round metal bars, pipe mainly contains two kinds of forms: the one, and the transverse rolling of roll axis and rolled piece axis normal; The 2nd, the oblique milling that roll axis and rolled piece axis intersect, but this two methods are all carried out after blank heating.

Existing three-roll cross rolling mill, when rolled steel tube, copper pipe, need to adopt the hot rolling method, promptly strand needs with the firing equipment heating, roll preceding, roll the back and produce a large amount of scale losses, the rolled piece surface quality is poor, equipment investment is big, and energy consumption is big, and exists labor strength big, environmental pollution is big, and equipment is regulated defectives such as trouble.

From present cold rolling used rolling process equipment, except that common open-train mill, also have Pilger cycle milling train and three-roller planetary rolling mill, though this three classes milling train is each has something to recommend him, but very big defective is arranged all: open-train mill generally can only carry out the processing of less deflection in an equipment, often need several equipment of serial or parallel connection to carry out continuous rolling, obviously equipment investment is big; Pilger cycle machine poor product quality, roll whenever circles, and can only be rolled on a segment length in roll pass district, and efficient is low, and economy is relatively poor; Though three-roller planetary rolling mill has many advantages, product is single, and does not have punching quality.

Summary of the invention:

The object of the present invention is to provide that a kind of workpiece is rollingly worn, in the reaming process, need not other heater heating, can realize to workpiece wear, the ingot casting of reaming processing is coldly worn, the roller trio skew rolling method of cold reaming.

Technical solution of the present invention is:

A kind of ingot casting is cold to be worn, the roller trio skew rolling method of cold reaming, it is characterized in that: three roller surfaces of three-roll cross rolling mill are provided with recessed, prominent circulus, make and form the large deformation district between three rolls; Strand to be processed is delivered to three large deformation districts between the roll be rolled, the top that will come directly towards mechanism is simultaneously delivered in the processing sections; Three rolls rotate in the same way, drive the rolled piece reverse rotation, produce screw, outstanding processing strand.

Surface recessed, prominent ring all is smooth form.Three equidistant fork 115 degree of roll axis～125 degree.There is the push rod of the streamlined of being equipped with top in top mechanism, and the push rod periphery is provided with the pressure roller clamping device.

The present invention has overcome the shortcoming of pure hot rolling, do not need to add in addition firing equipment, save equipment investment and energy resource consumption, realized the wearing of ingot casting, reaming coldly wear, cold reaming, rolled piece does not produce oxide skin, for the following process operation has been brought convenience, metal deformation resistance is low, plant capacity is little, and working modulus is big, non-environmental-pollution; The present invention has broken through shortcomings such as pure cold rolling power is big, energy resource consumption is big, equipment is huge, product work hardening, the preceding need increase of back road drawing procedure heat-treatment of annealing softening process.Resultant metal dense structure, the crystal grain that the present invention produces is tiny, even, surfaces externally and internally is bright and clean, wall thickness is even, good product quality.

Description of drawings:

Fig. 1 is the configuration diagram of the three-roll cross rolling mill that adopts of the present invention.

Fig. 2 is the diagrammatic sketch that is connected of roll and frame among Fig. 1.

Fig. 3 is a top mechanism structure diagrammatic sketch.

The specific embodiment:

A kind of ingot casting is cold to be worn, the roller trio skew rolling method of cold reaming, and three roll 2 surfaces of arranging along circumference equal angles fork of three-roll cross rolling mill are provided with recessed, the prominent ring 3 of multiple tracks, makes and forms the large deformation district between three rolls 2, and surface recessed, prominent ring 3 all is smooth form.Strand 4 to be processed is delivered to three large deformation districts between the roll be rolled, the top 5 that will come directly towards mechanism is simultaneously delivered in the processing sections; Three rolls rotate in the same way, drive the rolled piece reverse rotation, advance vertically simultaneously, produce screw, rolled piece is in the large deformation district, depressed one by one by three rolls, rolled piece whenever contacts once with roll, just bears the time processing distortion, the unit drafts is also little, but the result that these light reduction continuous modifications accumulate gradually just can obtain the large deformation of ∑＞80～95% on a milling train, contacts with roller surface owing to rolled piece simultaneously, can be because friction produces heat, just can make workpiece produce bigger temperature rise in the large deformation district, under the situation that does not have firing equipment to participate in, realization " cold " is worn, the result of " cold " reaming.Strand 4 is outstanding fully to get final product to processing.There is the push rod 6 of the streamlined of being equipped with top 5 in top mechanism, push rod 6 peripheries are provided with packaged type cross roll clamping device, the cross roll clamping device comprises three cross rolls 7 that clamp push rod 6, and cross roll 7 is connected with packaged type support 8, and push rod moves along with moving of packaged type support in the course of work.

Certainly, the present invention can also have other suitable embodiment, for example, the strand processing district is in the outer cover, is full of inert gas (routine nitrogen etc.) in the outer cover, and three roller surfaces also can not established the concave, convex ring, and are smooth arc surface form.

When strand is rod in the foregoing description, realize " cold " perforation, when strand is pipe, realize " cold " reaming.

Claims

An ingot casting coldly wear, the roller trio skew rolling method of cold reaming, it is characterized in that: three roller surfaces of three-roll cross rolling mill are provided with recessed, the prominent circulus of multiple tracks, make and form the large deformation district between three rolls; Strand to be processed is delivered to three large deformation districts between the roll be rolled, the top that will come directly towards mechanism is simultaneously delivered in the processing sections; Three rolls rotate in the same way, drive the rolled piece reverse rotation, produce screw, outstanding processing strand.
2. ingot casting according to claim 1 is cold to be worn, the roller trio skew rolling method of cold reaming, it is characterized in that: surface recessed, prominent ring all is smooth form.
3. ingot casting according to claim 1 and 2 is cold to be worn, the roller trio skew rolling method of cold reaming, it is characterized in that: three roll axis fork 115 degree～125 degree.
4. ingot casting according to claim 1 and 2 is cold to be worn, the roller trio skew rolling method of cold reaming, it is characterized in that: there is the push rod of the streamlined of being equipped with top in top mechanism, the push rod periphery is provided with packaged type cross roll clamping device, and the cross roll clamping device comprises three cross rolls that clamp push rod.