CN111633478A - High-quality processing method for outer surface of seamless pipe - Google Patents
High-quality processing method for outer surface of seamless pipe Download PDFInfo
- Publication number
- CN111633478A CN111633478A CN202010532194.5A CN202010532194A CN111633478A CN 111633478 A CN111633478 A CN 111633478A CN 202010532194 A CN202010532194 A CN 202010532194A CN 111633478 A CN111633478 A CN 111633478A
- Authority
- CN
- China
- Prior art keywords
- grinding
- polishing
- defect points
- seamless pipe
- polished
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
Abstract
The invention belongs to the technical field of metal pressure processing equipment, and mainly relates to a high-quality processing method for the outer surface of a seamless pipe. The proposed high-quality processing method for the outer surface of the seamless pipe comprises the following steps: grinding the tube blank, grinding the tube during the drawing process, and finally grinding the finished product tube; grinding the defect points; firstly, polishing and grinding deeper defect points in the tangential direction, and then polishing and grinding along the axis direction of the tube blank to remove polishing and grinding traces in the tangential direction; the shallow defect points can be polished by directly adopting an axis polishing mode; the process tube is polished, and oil stains remained on the surface in a drawing process are removed; the finished pipe is polished by using an angle grinder to polish deeper quality defects, and then the surface of the seamless pipe is polished once by using a smoothing machine, so that the polishing trace of the angle grinder is eliminated, and the seamless pipe has no defect and uniform color. The invention is safe and reliable, is convenient to use and operate, and can effectively improve the surface quality of the seamless pipe.
Description
Technical Field
The invention belongs to the technical field of metal pressure processing equipment, and mainly relates to a high-quality processing method for the outer surface of a seamless pipe.
Background
In the production process of seamless pipes, surface quality defects are common, national standard enterprise and standard client technical documents all put forward high quality requirements on the surfaces of seamless pipe products, and the product acceptance requirements are higher and higher. The requirements of technical documents such as national standards and the like on the surface quality of the pipe are as follows: the inner and outer surfaces of the seamless pipe need to be smooth and clean, and the defects of pinholes, cracks, impurities, peeling, delamination and the like are not allowed. Slight indentation, scratch, drawing mark and the like are allowed, the depth of the drawing mark is required to be within the range of the allowable negative deviation of the wall thickness, or the drawing mark, the scratch and the drawing mark which are smaller than half of the allowable deviation of the thickness dimension are allowed on the inner surface and the outer surface of the seamless pipe. Dirt or oil stains are not allowed to exist, but oxidative discoloration due to atmospheric influences is allowed.
Therefore, in order to ensure that the outer surface quality of the seamless pipe meets national standards, European standards and enterprise standards and meet the technical quality requirements of high quality of customers, the surface quality of the seamless pipe needs to be improved, the surface quality of a pipe product is ensured to be free of defects, and the surface quality of the seamless pipe needs to be improved by an innovative processing method in production.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a high-quality processing method for the outer surface of a seamless pipe.
The invention adopts the following technical scheme for completing the invention task:
a high-quality processing method for the outer surface of a seamless pipe comprises the following specific steps: grinding the tube blank, grinding the tube during the drawing process, and finally grinding the finished product tube; and firstly, grinding the tube blank. First determine the tools used: an angle grinder, #240 shutter grinding wheel, #320 shutter grinding wheel, and a fiber polishing wheel. The surface of the tube blank is wiped by cotton cloth to be cleaned, and then the oxide skin, stains and the like on the surface of the tube blank are ground by a fiber polishing sheet to expose the defect points of the tube blank. And then cleaning. The operator marked the tube blank defect points with a marker pen and then ground the defect points using a #240 shutter grinding wheel. Firstly, polishing and grinding deeper defect points in the tangential direction, and then polishing and grinding along the axis direction of the tube blank to remove polishing and grinding traces in the tangential direction; and the shallow defect points can be directly polished in an axial polishing mode. And checking whether missing defect points exist after polishing.
And secondly, polishing the process pipe. First determine the tools used: angle grinder, #320 shutter grinding wheel and fiber polishing wheel. And (3) using cotton cloth dipped with kerosene or alcohol to remove the residual oil stain on the surface after drawing. The surface quality defect points of the process tube were marked with a marker pen and then polished with a #320 shutter grinding wheel. The deeper defect points are polished in the tangential direction, and then polished in the axial direction of the tube blank to remove polishing traces in the tangential direction; and the shallow defect points can be directly polished in an axial polishing mode. For large-area and shallow defects, the fiber polishing sheet is directly used for polishing. After finishing grinding the marked defect points, cleaning the surface of the process pipe by cotton cloth again, and then checking whether missing defect points exist.
And thirdly, polishing the finished product pipe. First determine the tools used: a flat bed machine, an angle grinder, #320 shutter grinding disks, and a fiber polishing disk. The annealed finished tubes were inspected for surface quality marking defects. And grinding deeper quality defects by using an angle grinder according to the grinding method of the first step, and then grinding the whole surface of the seamless pipe once by using a smoothing machine to eliminate grinding traces of the angle grinder so as to ensure that the whole seamless pipe has no defects and uniform color.
The three steps of polishing's operating point: the specification of the grinding wheel is strictly selected. When polishing and grinding are carried out in the axial direction, the angle grinder moves towards one direction and does not do reciprocating motion. When the angle grinder is used for operation, attention is paid to an included angle between the grinding wheel and the seamless pipe, and the angle grinder protective cover does not damage the seamless pipe. The grinding operation has moderate force to grind off the defects without excessively applying force to partially grind the pits. And the seriously worn fiber polishing piece is replaced in time, so that the surface quality of the seamless pipe is prevented from being damaged by the middle plastic part after the polishing piece becomes thinner.
Safety items of the three grinding steps are as follows: during the grinding operation, the opposite side of the operator is forbidden to stand, so that the grinding wheel is prevented from flying out to hurt people. The angle grinder is safe to grind and use electricity.
The high-quality processing method for the outer surface of the seamless pipe, provided by the invention, is safe and reliable, is convenient to use and operate, and can effectively improve the surface quality of the seamless pipe.
Detailed Description
The present invention will be described in further detail with reference to examples.
A high-quality processing method for the outer surface of a seamless pipe comprises the following specific steps:
firstly, grinding a tube blank; first determine the tools used: an angle grinder, #240 shutter grinding wheel, #320 shutter grinding wheel, fiber polishing wheel; firstly, cleaning the surface of the tube blank by using cotton cloth, and then grinding oxide skin and stains on the surface of the tube blank by using a fiber polishing sheet to expose defect points of the tube blank; cleaning again; an operator marks the tube blank defect points by using a marking pen, and then grinds the defect points by using a #240 shutter grinding wheel; firstly, polishing and grinding deeper defect points in the tangential direction, and then polishing and grinding along the axis direction of the tube blank to remove polishing and grinding traces in the tangential direction; the shallow defect points can be polished by directly adopting an axis polishing mode; checking whether missing defect points exist after polishing;
secondly, grinding the process pipe: first determine the tools used: angle grinder, #320 shutter grinding wheel and fiber polishing wheel; removing residual oil stain on the surface of the drawing by using cotton cloth dipped with kerosene or alcohol; marking the surface quality defect points of the process pipe by using a marking pen, and then polishing the defect points by using a #320 shutter grinding wheel; the deeper defect points are polished in the tangential direction, and then polished in the axial direction of the tube blank to remove polishing traces in the tangential direction; the shallow defect points can be polished by directly adopting an axis polishing mode; for large-area and shallow defects, polishing and grinding are directly carried out by using a fiber polishing sheet; after finishing polishing the marked defect points, cleaning the surface of the process pipe by using cotton cloth again, and then checking whether missing defect points exist;
thirdly, product pipe polishing: first determine the tools used: a flat bed machine, an angle grinder, #320 shutter grinding wheel and a fiber polishing piece; the annealed finished tubes were inspected for surface quality marking defects. And grinding deeper quality defects by using an angle grinder according to the grinding method of the first step, and then grinding the whole surface of the seamless pipe once by using a smoothing machine to eliminate grinding traces of the angle grinder so as to ensure that the whole seamless pipe has no defects and uniform color.
The three steps of polishing's operating point: strictly selecting the specification of the grinding wheel; when polishing and grinding in the axial direction, the angle grinder moves towards one direction and does not do reciprocating motion; when the angle grinder is used for operation, attention is paid to an included angle between the grinding wheel and the seamless pipe, and the angle grinder protective cover does not damage the seamless pipe; the grinding operation has moderate force to grind off the defects without excessively applying force to partially grind the pits. And the seriously worn fiber polishing piece is replaced in time, so that the surface quality of the seamless pipe is prevented from being damaged by the middle plastic part after the polishing piece becomes thinner.
Claims (2)
1. A high-quality processing method for the outer surface of a seamless pipe is characterized by comprising the following steps: the processing method comprises the following specific steps:
firstly, grinding a tube blank; firstly, cleaning the surface of the tube blank by using cotton cloth, and then grinding oxide skin and stains on the surface of the tube blank by using a fiber polishing sheet to expose defect points of the tube blank; cleaning again; an operator marks the tube blank defect points by using a marking pen, and then grinds the defect points by using a #240 shutter grinding wheel; firstly, polishing and grinding deeper defect points in the tangential direction, and then polishing and grinding along the axis direction of the tube blank to remove polishing and grinding traces in the tangential direction; the shallow defect points can be polished by directly adopting an axis polishing mode; checking whether missing defect points exist after polishing;
secondly, grinding the process pipe: removing residual oil stain on the surface of the drawing by using cotton cloth dipped with kerosene or alcohol; marking the surface quality defect points of the process pipe by using a marking pen, and then polishing the defect points by using a #320 shutter grinding wheel; the deeper defect points are polished in the tangential direction, and then polished in the axial direction of the tube blank to remove polishing traces in the tangential direction; the shallow defect points can be polished by directly adopting an axis polishing mode; for large-area and shallow defects, polishing and grinding are directly carried out by using a fiber polishing sheet; after finishing polishing the marked defect points, cleaning the surface of the process pipe by using cotton cloth again, and then checking whether missing defect points exist;
thirdly, product pipe polishing: the annealed finished tubes were inspected for surface quality marking defects. And grinding deeper quality defects by using an angle grinder according to the grinding method of the first step, and then grinding the whole surface of the seamless pipe once by using a smoothing machine to eliminate grinding traces of the angle grinder so as to ensure that the whole seamless pipe has no defects and uniform color.
2. A method of high quality processing of the outer surface of a seamless pipe according to claim 1, characterized by: when polishing and grinding in the axial direction, the angle grinder moves towards one direction and does not do reciprocating motion; when the angle grinder is used for operation, attention is paid to an included angle between the grinding wheel and the seamless pipe, and the angle grinder protective cover does not damage the seamless pipe; the grinding operation has moderate force to grind the defects without using excessive force to locally grind the pits; and the seriously worn fiber polishing piece is replaced in time, so that the surface quality of the seamless pipe is prevented from being damaged by the middle plastic part after the polishing piece becomes thinner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010532194.5A CN111633478A (en) | 2020-06-12 | 2020-06-12 | High-quality processing method for outer surface of seamless pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010532194.5A CN111633478A (en) | 2020-06-12 | 2020-06-12 | High-quality processing method for outer surface of seamless pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111633478A true CN111633478A (en) | 2020-09-08 |
Family
ID=72325814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010532194.5A Pending CN111633478A (en) | 2020-06-12 | 2020-06-12 | High-quality processing method for outer surface of seamless pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111633478A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114603312A (en) * | 2020-12-09 | 2022-06-10 | 常州市联谊特种不锈钢管有限公司 | Production process of high-precision magnetic isolation sleeve |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2360211Y (en) * | 1998-09-09 | 2000-01-26 | 成都无缝钢管有限责任公司 | Steel pipe coping machine |
| US20020068507A1 (en) * | 2000-12-06 | 2002-06-06 | Lorincz Thomas A. | System and method for electropolishing nonuniform pipes |
| CN1962187A (en) * | 2006-12-11 | 2007-05-16 | 太原市申海机械设备有限公司 | Automatic track-seeking trimming and grinding machine |
| CN201950539U (en) * | 2010-12-24 | 2011-08-31 | 衡阳市国旺机械加工有限公司 | Grinding machine for interior of dual-end deep-hole steel pipe |
| CN104985494A (en) * | 2015-08-12 | 2015-10-21 | 新兴铸管股份有限公司 | Cast iron pipe outer wall grinding device |
| CN105983888A (en) * | 2015-01-30 | 2016-10-05 | 重庆君卓机械有限公司 | Steel tube grinding process |
| CN205835065U (en) * | 2016-06-03 | 2016-12-28 | 湖南自洁材料研究院有限公司 | Outer surface of steel tube abrasive brush and include the grinding apparatus of this abrasive brush |
| CN106425759A (en) * | 2016-11-07 | 2017-02-22 | 南京钢铁股份有限公司 | Spring steel blank grinding method |
| CN106493187A (en) * | 2016-10-27 | 2017-03-15 | 南京宝泰特种材料股份有限公司 | A kind of heavy caliber thick wall titanium and its low-cost manufacture method of alloy seamless tubing |
| CN107553072A (en) * | 2017-09-21 | 2018-01-09 | 上海臣泰制管有限公司 | A kind of tube-making process method and tubulation apparatus |
| CN107866700A (en) * | 2017-10-23 | 2018-04-03 | 南京钢铁股份有限公司 | A kind of control method of blank grinding depth |
| CN108722897A (en) * | 2018-06-30 | 2018-11-02 | 浩中机械(蚌埠)有限公司 | The method and system of metal long material line flaw detection and reconditioning |
| CN109794811A (en) * | 2019-01-11 | 2019-05-24 | 湖州胜纯管道有限公司 | A kind of surface treatment method for stainless steel pipe |
| CN110509116A (en) * | 2019-09-03 | 2019-11-29 | 南京钢铁股份有限公司 | A kind of grinding method on soft steel blank surface |
| CN111230608A (en) * | 2020-03-20 | 2020-06-05 | 福建冠宇钢管制造有限公司 | Grinding device and method for end of spiral pipe |
-
2020
- 2020-06-12 CN CN202010532194.5A patent/CN111633478A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2360211Y (en) * | 1998-09-09 | 2000-01-26 | 成都无缝钢管有限责任公司 | Steel pipe coping machine |
| US20020068507A1 (en) * | 2000-12-06 | 2002-06-06 | Lorincz Thomas A. | System and method for electropolishing nonuniform pipes |
| CN1962187A (en) * | 2006-12-11 | 2007-05-16 | 太原市申海机械设备有限公司 | Automatic track-seeking trimming and grinding machine |
| CN201950539U (en) * | 2010-12-24 | 2011-08-31 | 衡阳市国旺机械加工有限公司 | Grinding machine for interior of dual-end deep-hole steel pipe |
| CN105983888A (en) * | 2015-01-30 | 2016-10-05 | 重庆君卓机械有限公司 | Steel tube grinding process |
| CN104985494A (en) * | 2015-08-12 | 2015-10-21 | 新兴铸管股份有限公司 | Cast iron pipe outer wall grinding device |
| CN205835065U (en) * | 2016-06-03 | 2016-12-28 | 湖南自洁材料研究院有限公司 | Outer surface of steel tube abrasive brush and include the grinding apparatus of this abrasive brush |
| CN106493187A (en) * | 2016-10-27 | 2017-03-15 | 南京宝泰特种材料股份有限公司 | A kind of heavy caliber thick wall titanium and its low-cost manufacture method of alloy seamless tubing |
| CN106425759A (en) * | 2016-11-07 | 2017-02-22 | 南京钢铁股份有限公司 | Spring steel blank grinding method |
| CN107553072A (en) * | 2017-09-21 | 2018-01-09 | 上海臣泰制管有限公司 | A kind of tube-making process method and tubulation apparatus |
| CN107866700A (en) * | 2017-10-23 | 2018-04-03 | 南京钢铁股份有限公司 | A kind of control method of blank grinding depth |
| CN108722897A (en) * | 2018-06-30 | 2018-11-02 | 浩中机械(蚌埠)有限公司 | The method and system of metal long material line flaw detection and reconditioning |
| CN109794811A (en) * | 2019-01-11 | 2019-05-24 | 湖州胜纯管道有限公司 | A kind of surface treatment method for stainless steel pipe |
| CN110509116A (en) * | 2019-09-03 | 2019-11-29 | 南京钢铁股份有限公司 | A kind of grinding method on soft steel blank surface |
| CN111230608A (en) * | 2020-03-20 | 2020-06-05 | 福建冠宇钢管制造有限公司 | Grinding device and method for end of spiral pipe |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114603312A (en) * | 2020-12-09 | 2022-06-10 | 常州市联谊特种不锈钢管有限公司 | Production process of high-precision magnetic isolation sleeve |
| CN114603312B (en) * | 2020-12-09 | 2024-04-30 | 常州市联谊特种不锈钢管有限公司 | Production process of high-precision magnetism isolating sleeve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107322423B (en) | A kind of technique for grinding of metal vacuum cavity sealing surface | |
| CN106181218A (en) | A kind of aluminium alloy wheel hub of vehicle remanufactures technique | |
| CN103100947A (en) | Mirror polish method of car lampshade forming die body surfaces | |
| CN103302554A (en) | Mirror polishing method for polishing surface of lens sheet mould main body | |
| CN111633478A (en) | High-quality processing method for outer surface of seamless pipe | |
| WO2020143272A1 (en) | Refurbishment treatment method for coating of cold rolling furnace roller | |
| CN106544671A (en) | A kind of renovation technique of automobile die | |
| CN107443175A (en) | A kind of method based on glossing processing mirror type notebook computer casing | |
| CN101704152A (en) | In-situ stress-free resurfacing welding repair process of abrasion of large-sized rotor journal | |
| JP2018161680A (en) | Method for treating shell internal surface | |
| CN105081941A (en) | Mechanical polishing process of inner wall of stainless steel storage tank | |
| CN210938276U (en) | Centering shaft for supporting bearing inner ring during super-finishing | |
| CN210757194U (en) | Polishing equipment for machining convenient to remove dust | |
| CN109202602B (en) | Method for polishing non-spherical mold insert | |
| CN105563031A (en) | Machining process for thin-wall product | |
| CN104493432A (en) | Stainless steel tableware machining technology | |
| CN105127867A (en) | Mechanical polishing system | |
| CN105750811A (en) | Guide rail repairing technology | |
| CN103353456A (en) | Grinding chatter mark detection method for mill roll shaft neck | |
| CN104057365A (en) | Surface treatment method | |
| CN213225599U (en) | Polisher is used in panel beating production | |
| CN217371857U (en) | Zirconia ceramic machining is with polishing equipment that has mar detection function | |
| CN102626971A (en) | Method for manufacturing rubber roll of stretching straightening machine | |
| CN219324663U (en) | Novel processing tool for slender thin-wall shielding case | |
| CN104786712A (en) | Smoothness and haziness treatment process for embossing roller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200908 |
|
| WD01 | Invention patent application deemed withdrawn after publication |