阅读说明：本技术 一种用于制备冷轧薄壁套筒的生产工艺 (Production process for preparing cold-rolled thin-wall sleeve ) 是由 由明炜 陈长才 李鹏瑞 于 2019-09-06 设计创作，主要内容包括：本发明涉及冷轧套筒技术领域,尤其涉及一种用于制备冷轧薄壁套筒的生产工艺。包括Q345-B材质的冷轧薄板为原材料代替传统的无缝钢管,原材料成本大大降低,冷轧套筒的生产成本降低；通过裁板、卷板、焊接、校型、抛光流水式生产线制作冷轧套筒,代替传统无缝管冷镦扩孔工艺制作冷轧套筒,生产效率大大提高；专用直缝自动焊机和自动抛光机设置为一体,在把头焊接时后方的抛光机对其焊缝进行一次抛光,当焊接头复位时抛光机同时复位对其焊缝二次抛光；自制液压校型机和专用无引头两辊卷板机设置为一体,卷板和校型依次进行,无需对套筒二次转移加工。(The invention relates to the technical field of cold-rolled sleeves, in particular to a production process for preparing a cold-rolled thin-wall sleeve. The cold-rolled sheet made of the Q345-B material is used as a raw material to replace a traditional seamless steel tube, so that the raw material cost is greatly reduced, and the production cost of the cold-rolled sleeve is reduced; the cold-rolled sleeve is manufactured through a plate cutting, plate rolling, welding, sizing and polishing flow production line, the traditional seamless tube cold heading and hole expanding process is replaced, and the production efficiency is greatly improved; the special straight seam automatic welding machine and the automatic polishing machine are integrated, the rear polishing machine performs primary polishing on the welding seam when the welding head is welded, and the polishing machine simultaneously resets to perform secondary polishing on the welding seam when the welding head resets; the self-made hydraulic correction machine and the special guide-head-free two-roller plate bending machine are arranged into a whole, plate bending and correction are sequentially carried out, and secondary transfer processing of the sleeve is not needed.)

1. A production process for preparing a cold-rolled thin-walled sleeve is characterized by comprising the following steps of: the device comprises an uncoiler, a conveying roller, a plate shearing machine, a special no-lead two-roller plate bending machine, a special straight seam automatic welding machine, a self-made hydraulic pressure correcting machine, an automatic polishing machine, a steel belt and a sleeve; the processing technology for preparing the cold-rolled thin-wall sleeve comprises the following steps:

selecting raw materials, namely Q345-B, a cold-rolled sheet with the thickness of 3-8mm, and the tensile strength of the material is 550-600 Mpa;

blanking: feeding by an uncoiler and blanking by a plate shearing machine, and controlling the blanking tolerance, wherein the length and width tolerance is less than or equal to 1.5 mm;

plate rolling: using a special non-leading two-roller veneer reeling machine drum;

automatic welding: surfacing a butt weld by using a special straight seam automatic welding machine;

and (3) type correction: correcting the shape by using a self-made hydraulic shape correcting machine to correct the roundness of the winding drum and the radian of a welding seam;

polishing: polishing the welding seam by using an automatic polishing machine, and inspecting by using an arc measuring block;

and (4) checking: measuring the roundness diameter of the inner hole, wherein the tolerance is less than or equal to 1.5mm, and obtaining a qualified product;

packaging: and (3) polishing by using an angle grinder to manufacture anti-skid patterns, wherein the upper side and the lower side of each pattern are 50mm wide, spraying paint, and coating oil inside and outside to prevent rust.

2. A production process for the production of cold-rolled thin-walled sleeves according to claim 1, characterized in that: the special straight seam automatic welding machine in the step d) and the automatic polishing machine in the step f) are arranged into a whole.

3. A production process for the production of cold-rolled thin-walled sleeves according to claim 1, characterized in that: the special straight seam automatic welding machine in the step d) comprises a gantry support, a transverse guide rail group, a longitudinal guide rail group and a welding handle head; the transverse guide rail group is fixedly arranged between the tops of the two gantry supports; the longitudinal guide rail group is connected to the transverse guide rail group in a sliding manner; one side of the longitudinal guide rail group is connected with a fixing plate in a sliding manner; the welding handle head is fixedly arranged on the fixing plate; a fixing frame is arranged on the left side of the fixing plate; the automatic polishing machine in the step f) is fixedly arranged on the fixing frame.

4. A production process for the production of cold-rolled thin-walled sleeves according to claim 1, characterized in that: the sleeve is arranged on the special no-leading two-roller plate bending machine; the sleeve welding seam position, the automatic polishing machine and the welding handle head are vertically corresponding.

5. A production process for the production of cold-rolled thin-walled sleeves according to claim 1, characterized in that: the self-made hydraulic pressure correcting machine in the step e) and the special no-leading-end two-roller plate bending machine in the step c) are arranged into a whole.

6. A production process for the production of cold-rolled thin-walled sleeves according to claim 1, characterized in that: the self-made hydraulic sizing machine comprises a base, a sliding seat and a hydraulic cylinder; the base is fixedly arranged on a left side wall plate of the leading-end-free two-roller plate bending machine; the sliding seat is connected to the right side of the base in a sliding manner; the hydraulic cylinder is fixedly arranged at the bottom of the base; the top of the telescopic rod of the hydraulic cylinder is fixed with the sliding seat; and three correction roller shafts are arranged on the right side of the sliding seat.

7. A production process for the production of cold-rolled thin-walled sleeves according to claim 6, characterized in that: the three correcting roller shafts are all arranged inside the sleeve; the diameter of an excircle formed among the three correction roller shafts is equal to the inner diameter of the sleeve.

8. A production process for the production of cold-rolled thin-walled sleeves according to claim 1, characterized in that: the tolerance of the chord height at the arc position of the welding line is less than or equal to 0.5mm, and the arc connecting position is required to have no obvious bulge after polishing.

Technical Field

The invention relates to the technical field of cold-rolled sleeves, in particular to a production process for preparing a cold-rolled thin-wall sleeve.

Background

The existing Jing Tang 3 cold rolling lines need more than 4 ten thousand cold rolling sleeves per year. According to the prediction of the demand state of Jing Tang, 25% of the new sleeves are suitable for being used as winding cores, and the total amount is predicted to be about 1 ten thousand pieces/year. According to the existing scale calculation of Jing Tang, the migrating steel in the first steel system and the cis-cold rolling mill have similar products, and the demand is estimated to reach 3 thousands of products per year.

The existing product is manufactured by adopting a seamless steel pipe and cold heading reaming process, adopts a seamless steel pipe with similar specification, and can be directly used after the inner hole is reamed by using a press machine through a specific tool to reach the size of a finished product. The production efficiency is low, the energy consumption is high, and the production cost is high. The existing product is a seamless steel pipe with the wall thickness of more than 8mm, and the product size is as follows: phi 520/phi 504X 1200, net weight 121.22 kg/piece.

The cold-rolled sleeve is manufactured by adopting the cold heading and reaming of the seamless tube, the cost of raw materials is higher, the processing is difficult, and the production efficiency is low.

Disclosure of Invention

Aiming at the technical defects, the invention provides a production process for preparing a cold-rolled thin-wall sleeve, wherein a cold-rolled sheet made of Q345-B material is used as a raw material to replace the traditional seamless steel tube, so that the raw material cost is greatly reduced, and the production cost of the cold-rolled sleeve is reduced; the cold-rolled sleeve is manufactured through a plate cutting, plate rolling, welding, sizing and polishing flow production line, the traditional seamless tube cold heading and hole expanding process is replaced, and the production efficiency is greatly improved; the special straight seam automatic welding machine and the automatic polishing machine are integrated, the rear polishing machine performs primary polishing on the welding seam when the welding head is welded, and the polishing machine simultaneously resets to perform secondary polishing on the welding seam when the welding head resets; the self-made hydraulic correction machine and the special guide-head-free two-roller plate bending machine are arranged into a whole, plate bending and correction are sequentially carried out, and secondary transfer processing of the sleeve is not needed.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the method comprises the following steps: the device comprises an uncoiler, a conveying roller, a plate shearing machine, a special no-lead two-roller plate bending machine, a special straight seam automatic welding machine, a self-made hydraulic pressure correcting machine, an automatic polishing machine, a steel belt and a sleeve; the processing technology for preparing the cold-rolled thin-wall sleeve comprises the following steps:

a) selecting raw materials, namely Q345-B, a cold-rolled sheet with the thickness of 3-8mm, and the tensile strength of the material is 550-600 Mpa;

b) blanking: feeding by an uncoiler and blanking by a plate shearing machine, and controlling the blanking tolerance, wherein the length and width tolerance is less than or equal to 1.5 mm;

c) plate rolling: using a special non-leading two-roller veneer reeling machine drum;

d) automatic welding: surfacing a butt weld by using a special straight seam automatic welding machine;

e) and (3) type correction: correcting the shape by using a self-made hydraulic shape correcting machine to correct the roundness of the winding drum and the radian of a welding seam;

f) polishing: polishing the welding seam by using an automatic polishing machine, and inspecting by using an arc measuring block;

g) and (4) checking: measuring the roundness diameter of the inner hole, wherein the tolerance is less than or equal to 1.5mm, and obtaining a qualified product;

h) packaging: and (3) polishing by using an angle grinder to manufacture anti-skid patterns, wherein the upper side and the lower side of each pattern are 50mm wide, spraying paint, and coating oil inside and outside to prevent rust.

Further optimizing the technical scheme, the special straight seam automatic welding machine in the step d) and the automatic polishing machine in the step f) are arranged into a whole.

Further optimizing the technical scheme, the special automatic straight seam welding machine in the step d) comprises a gantry support, a transverse guide rail group, a longitudinal guide rail group and a welding handle head; the transverse guide rail group is fixedly arranged between the tops of the two gantry supports; the longitudinal guide rail group is connected to the transverse guide rail group in a sliding manner; one side of the longitudinal guide rail group is connected with a fixing plate in a sliding manner; the welding handle head is fixedly arranged on the fixing plate; a fixing frame is arranged on the left side of the fixing plate; the automatic polishing machine in the step f) is fixedly arranged on the fixing frame.

Further optimizing the technical scheme, the sleeve is arranged on a special guiding-head-free two-roller plate bending machine; the sleeve welding seam position, the automatic polishing machine and the welding handle head are vertically corresponding.

Further optimizing the technical scheme, the self-made hydraulic pressure correcting machine in the step e) and the special no-leading-end two-roller plate bending machine in the step c) are arranged into a whole.

Further optimizing the technical scheme, the self-made hydraulic sizing machine comprises a base, a sliding seat and a hydraulic cylinder; the base is fixedly arranged on a left side wall plate of the leading-end-free two-roller plate bending machine; the sliding seat is connected to the right side of the base in a sliding manner; the hydraulic cylinder is fixedly arranged at the bottom of the base; the top of the telescopic rod of the hydraulic cylinder is fixed with the sliding seat; and three correction roller shafts are arranged on the right side of the sliding seat.

Further optimizing the technical scheme, the three correction roll shafts are all arranged in the sleeve; the diameter of an excircle formed among the three correction roller shafts is equal to the inner diameter of the sleeve.

Further optimizing the technical scheme, the chord height tolerance at the arc position of the welding line is less than or equal to 0.5mm, and the arc connecting position after polishing is required to have no obvious bulge.

Compared with the prior art, the invention has the following advantages:

1. Q345-B material, cold-rolled sheet with thickness of 3-8mm, cold-rolled sheet with tensile strength of 550-600 Mpa as raw material to replace traditional seamless steel tube, so that the cost of raw material is greatly reduced, and the production cost of cold-rolled sleeve is reduced.

2. The cold-rolled sleeve is manufactured through a plate cutting, plate rolling, welding, sizing and polishing flow production line, the traditional seamless tube cold heading and hole expanding process is replaced, and the production efficiency is greatly improved.

3. The cold-rolled steel sheet replaces traditional seamless steel pipe to process the sleeve, and the processing cost is low, and production efficiency is high, has solved and has adopted seamless pipe cold-heading reaming preparation cold-rolled sleeve, and its raw and other materials not only cost is higher, processes the difficult low production efficiency problem of production moreover.

4. The special straight seam automatic welding machine and the automatic polishing machine are integrated, when the welding handle head welds the straight seam position of the sleeve, the polishing machine at the rear polishes the welding seam at the rear of the welding handle head, when the welding head resets, the polishing machine resets simultaneously to polish the welding seam for the second time, the welding and polishing processes are integrated, and the manufacturing cost of the equipment is low.

5. The self-made hydraulic correcting machine and the special guiding-head-free two-roller plate bending machine are arranged into a whole, plate bending and correcting are sequentially carried out, secondary transfer processing of the sleeve is not needed, production efficiency is improved, and equipment manufacturing cost is low.

6. The welding is the top that the head set up at the sleeve gap, and welding seam position hot melt during the welding flows downwards under the action of gravity to compensate the space of below, the firm effect of welding is better, and the sleeve intensity of making is higher.

7. The tolerance of the roundness of the winding drum is less than or equal to 1.5mm, the tolerance of the chord height of the arc position of the welding line is less than or equal to 0.5mm, no obvious bulge is required at the arc connecting position after polishing, and the qualification rate of finished products for manufacturing the sleeve can be ensured.

Drawings

FIG. 1 is an overall flow diagram of a manufacturing process for making a cold-rolled thin-walled sleeve.

FIG. 2 is a schematic view of a flow of a rolled sheet portion of a production process for manufacturing a cold-rolled thin-walled sleeve.

FIG. 3 is a partial block diagram of the welding and grinding locations of a manufacturing process for making cold rolled thin walled sleeves.

FIG. 4 is a schematic view of the installation state of a hydraulic calibration machine used in the production process for preparing a cold-rolled thin-walled sleeve.

FIG. 5 is a partial cross-sectional view of a calibration site configuration for a manufacturing process for making a cold-rolled thin-walled sleeve.

In the figure: 1. an uncoiler; 2. a conveying roller; 3. a plate shearing machine; 4. a special no-leading two-roller plate bending machine; 5. a special automatic straight seam welding machine; 501. a gantry support; 502. a transverse guide rail set; 503. a longitudinal rail set; 504. welding a handle head; 505. a fixing plate; 506. a fixed mount; 6. a self-made hydraulic calibrator; 601. a base; 602. a slide base; 603. a hydraulic cylinder; 604. correcting the roll shaft; 7. automatic polishing machine; 8. a steel belt; 9. a sleeve; 901. and (7) welding seams.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.