CN102000715A - Molding ring for production of large-caliber thick-wall seamless steel pipe and surfacing compound manufacturing method thereof - Google Patents
Molding ring for production of large-caliber thick-wall seamless steel pipe and surfacing compound manufacturing method thereof Download PDFInfo
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- CN102000715A CN102000715A CN2010105148007A CN201010514800A CN102000715A CN 102000715 A CN102000715 A CN 102000715A CN 2010105148007 A CN2010105148007 A CN 2010105148007A CN 201010514800 A CN201010514800 A CN 201010514800A CN 102000715 A CN102000715 A CN 102000715A
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Abstract
The invention relates to a molding ring for production of a large-caliber thick-wall seamless steel pipe and a surfacing compound manufacturing method thereof. Hole walls of conical working sections at two sides of an inner hole of the molding ring respectively comprise a surfacing transition layer and surfacing layers. The surfacing compound manufacturing method comprises the following steps: machining grooves in the conical working sections at two sides of the inner hole of the molding ring, depositing a surfacing transition layer in each groove, successively depositing surfacing layers on the surfacing transition layer, and carrying out finish machining to the finished size. By using structural steel as the base material of the molding ring and depositing high Cr-Mn-Mo austenitic steel surfacing alloy electrodes with excellent high-temperature wear resistance to form the surfacing layers, the service life is prolonged by more than seven times compared with the traditional structural steel molding ring, and the surface quality of the pipe blank of the large-caliber thick-wall seamless steel pipe is also improved. Because the molding ring has a thick wall, stainless steel electrodes which do not need to be preheated are deposited to form the surfacing transition layer before depositing the surfacing layers with electrodes in order to avoid the danger that the deposited metal peels off in use due to the quench hardening of the structural steel base in a heat-affected zone in the surfacing process.
Description
Technical field
The present invention relates to a kind of mould circle and manufacture method of using in the heavy caliber thick wall seamless steel tube production process thereof of making.
Background technology
Station boiler with an important operation on the heavy caliber thick wall seamless steel tube production line be the steel pipe base is heated to forging temperature after, utilize horizontal hydraulic press by the extruding of plug and mould circle, force the high temperature pipe along steel shaft to producing pyroplastic deformation and pulling.The mould circle is an important mould on the pipe production line, and its endoporus high temperature abrasion resistance and dimensional stability have material impact to blank steel pipe appearance and size.Since be for a long time at 1250 ℃ of high-temperature work environments, about 700～900 ℃ of the surface temperature of mould circle endoporus two side conical surface active sections.Mould circle on the pipe production line is continued to use No. 45 forging bases making always at present, its high temperature abrasion resistance is poor, only be 60～70 service life, this defective has not only increased die cost, main is because No. 45 punching block circle endoporus working face serious wear, strengthened the resistance of deformation of steel pipe pulling, the alloy pipe resistance of deformation of pulling high added value can surpass the rated pressure of press.
The similar pipe production line in Europe, wearability and service life that the mode that generally adopts tungsten carbide button to overlap improves the mould circle, but carbide alloy cover manufacturing process complexity cost an arm and a leg, and this mode is not suitable for present domestic pipe production line.
Summary of the invention
The objective of the invention is to aim to provide a kind of long service life at above-mentioned present situation, the heavy caliber thick wall seamless steel tube production that can improve heavy caliber thick wall seamless steel tube pipe surface quality is with mould circle and built-up welding composite manufacturing method thereof.
The implementation of the object of the invention is, heavy caliber thick wall seamless steel tube production mould circle is that the hole wall of the mould circle endoporus two side conical surface active sections of matrix is made of built-up welding transition zone and overlay cladding with the structural steel.
Heavy caliber thick wall seamless steel tube is produced the built-up welding composite manufacturing method with the mould circle, and concrete steps are as follows:
1) process the groove of dark 2～12mm at mould circle endoporus two side conical surface active sections,
2) use stainless steel electrode built-up welding one deck built-up welding transition zone earlier at groove,
3) go out overlay cladding with the built-up welding successively on the built-up welding transition zone of special alloy welding rod again,
4) be refined to finished size.
The present invention is the matrix material of mould circle with the structural steel, the overlay cladding high Cr-Mn-Mo austenitic steel hardfacing alloy welding rod built-up welding of high temperature abrasion resistance excellence, service life, more traditional structure punching block circle improved more than 7 times, had also improved heavy caliber thick wall seamless steel tube pipe surface quality simultaneously.Because mould circle wall thickness is thicker, the quench hardening of heat affected area structural steel matrix the danger that deposited metal peels off occurs, before welding rod built-up welding overlay cladding, with stainless steel electrode built-up welding one deck built-up welding transition zone in the use when avoiding built-up welding.
Description of drawings
Fig. 1 is a heavy caliber thick wall seamless steel tube production of the present invention mould coil structures schematic diagram,
Fig. 2 is at the structural representation of existing heavy caliber thick wall seamless steel tube production with the endoporus two side conical surface active section machined grooves of mould circle,
Fig. 3 is the enlarged diagram of the hole wall of mould circle endoporus two side conical surface active sections by built-up welding transition zone and overlay cladding part.
The specific embodiment
With reference to Fig. 1, heavy caliber thick wall seamless steel tube production of the present invention is matrix material with mould circle 1 with the structural steel forging, and normalizing+temper draws.The hole wall of mould circle endoporus two side conical surface active sections is made of built-up welding transition zone 2 and overlay cladding 3.
With reference to Fig. 2,3, heavy caliber thick wall seamless steel tube production is with the built-up welding composite manufacturing method of mould circle, and its step is as follows:
1) process the groove 4 of dark 2～12mm at mould circle endoporus two side conical surface active sections, all keep suitable allowance before the built-up welding of mould circle appearance and size,
2) use stainless steel electrode built-up welding one deck built-up welding transition zone 2 earlier at groove, built-up welding transition zone bed thickness 2～3mm,
3) go out overlay cladding 3 with the built-up welding successively on the built-up welding transition zone of special alloy welding rod again, every layer of about 3mm of built-up welding thickness, total overlay cladding bed thickness 8～9mm,
4) be refined to finished size.
Claims (5)
1. heavy caliber thick wall seamless steel tube production mould circle is characterized in that with the structural steel being that the hole wall of mould circle endoporus two side conical surface active sections of matrix is made of built-up welding transition zone and overlay cladding.
2. heavy caliber thick wall seamless steel tube production mould circle according to claim 1 is characterized in that the built-up welding transition zone is the stainless steel electrode overlay cladding, and overlay cladding is the overlay cladding that the built-up welding successively of special alloy welding rod forms.
3. heavy caliber thick wall seamless steel tube production mould circle according to claim 1 is characterized in that built-up welding transition zone (2) bed thickness 2～3mm, overlay cladding (3) bed thickness 8～9mm.
4. the described heavy caliber thick wall seamless steel tube production of claim 1 is characterized in that concrete steps are with the built-up welding composite manufacturing method of mould circle:
1) process the groove of dark 2～12mm at mould circle endoporus two side conical surface active sections,
2) use stainless steel electrode built-up welding one deck built-up welding transition zone earlier at groove,
3) go out overlay cladding with the built-up welding successively on the built-up welding transition zone of special alloy welding rod again,
4) be refined to finished size.
5. heavy caliber thick wall seamless steel tube production according to claim 4 is characterized in that built-up welding transition zone (2) bed thickness 2～3mm with the built-up welding composite manufacturing method of mould circle, overlay cladding (3) bed thickness 8～9mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105148007A CN102000715A (en) | 2010-10-20 | 2010-10-20 | Molding ring for production of large-caliber thick-wall seamless steel pipe and surfacing compound manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105148007A CN102000715A (en) | 2010-10-20 | 2010-10-20 | Molding ring for production of large-caliber thick-wall seamless steel pipe and surfacing compound manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102000715A true CN102000715A (en) | 2011-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105148007A Pending CN102000715A (en) | 2010-10-20 | 2010-10-20 | Molding ring for production of large-caliber thick-wall seamless steel pipe and surfacing compound manufacturing method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102198555A (en) * | 2011-05-20 | 2011-09-28 | 中冶焊接科技有限公司 | Surfacing compound manufacturing method for manufacturing ejector for oxygen bottle |
| CN103231224A (en) * | 2013-04-17 | 2013-08-07 | 二重集团（德阳）重型装备股份有限公司 | Method for molding 90-degree elbow pipe after surface welding of inner wall of pipe billet of straight pipe |
| CN103691740A (en) * | 2013-12-06 | 2014-04-02 | 常州金安冶金设备有限公司 | Main transmission clutch of mill |
| CN105014192A (en) * | 2014-04-30 | 2015-11-04 | 沈阳透平机械股份有限公司 | Welding technology for build-up welding stainless steel through heat-resistant steel cylinder body band electrode/filament |
| CN109604769A (en) * | 2019-01-07 | 2019-04-12 | 武汉船用机械有限责任公司 | The welding method of annular workpieces |
| CN114131154A (en) * | 2021-11-04 | 2022-03-04 | 中广核研究院有限公司 | Welding method for low alloy steel adapter tube of reactor main equipment |
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| DE846537C (en) * | 1949-07-20 | 1952-08-18 | Hoerder Huettenunion Ag | Drawing ring for drawing hollow bodies |
| JPS54160552A (en) * | 1978-06-10 | 1979-12-19 | Sumitomo Metal Ind Ltd | Die for hot extrusion |
| JPS61269927A (en) * | 1985-05-24 | 1986-11-29 | Sumitomo Metal Ind Ltd | Die for pipe making by hot reducing |
| US5660075A (en) * | 1995-03-28 | 1997-08-26 | General Electric Company | Wire drawing die having improved physical properties |
| CN101623688A (en) * | 2009-07-31 | 2010-01-13 | 大连新重集团有限公司 | High wear-resistant roller screen roll and build-up welding process |
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2010
- 2010-10-20 CN CN2010105148007A patent/CN102000715A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE846537C (en) * | 1949-07-20 | 1952-08-18 | Hoerder Huettenunion Ag | Drawing ring for drawing hollow bodies |
| JPS54160552A (en) * | 1978-06-10 | 1979-12-19 | Sumitomo Metal Ind Ltd | Die for hot extrusion |
| JPS61269927A (en) * | 1985-05-24 | 1986-11-29 | Sumitomo Metal Ind Ltd | Die for pipe making by hot reducing |
| US5660075A (en) * | 1995-03-28 | 1997-08-26 | General Electric Company | Wire drawing die having improved physical properties |
| CN101623688A (en) * | 2009-07-31 | 2010-01-13 | 大连新重集团有限公司 | High wear-resistant roller screen roll and build-up welding process |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102198555A (en) * | 2011-05-20 | 2011-09-28 | 中冶焊接科技有限公司 | Surfacing compound manufacturing method for manufacturing ejector for oxygen bottle |
| CN102198555B (en) * | 2011-05-20 | 2013-02-20 | 中冶焊接科技有限公司 | Surfacing compound manufacturing method for manufacturing ejector for oxygen bottle |
| CN103231224A (en) * | 2013-04-17 | 2013-08-07 | 二重集团（德阳）重型装备股份有限公司 | Method for molding 90-degree elbow pipe after surface welding of inner wall of pipe billet of straight pipe |
| CN103231224B (en) * | 2013-04-17 | 2015-09-23 | 二重集团（德阳）重型装备股份有限公司 | The method of straight tube tube blank inner wall built-up welding aftershaping 90 ° of bend pipes |
| CN103691740A (en) * | 2013-12-06 | 2014-04-02 | 常州金安冶金设备有限公司 | Main transmission clutch of mill |
| CN105014192A (en) * | 2014-04-30 | 2015-11-04 | 沈阳透平机械股份有限公司 | Welding technology for build-up welding stainless steel through heat-resistant steel cylinder body band electrode/filament |
| CN105014192B (en) * | 2014-04-30 | 2017-03-15 | 沈阳透平机械股份有限公司 | The heat-resisting steel cylinder band/stainless welding procedure of filament built-up welding |
| CN109604769A (en) * | 2019-01-07 | 2019-04-12 | 武汉船用机械有限责任公司 | The welding method of annular workpieces |
| CN109604769B (en) * | 2019-01-07 | 2021-11-16 | 武汉船用机械有限责任公司 | Method for welding annular workpiece |
| CN114131154A (en) * | 2021-11-04 | 2022-03-04 | 中广核研究院有限公司 | Welding method for low alloy steel adapter tube of reactor main equipment |
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Application publication date: 20110406 |