CN101967647A - Solid boriding process of cold-drawing inner die of seamless steel pipe - Google Patents
Solid boriding process of cold-drawing inner die of seamless steel pipe Download PDFInfo
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- CN101967647A CN101967647A CN 201010531010 CN201010531010A CN101967647A CN 101967647 A CN101967647 A CN 101967647A CN 201010531010 CN201010531010 CN 201010531010 CN 201010531010 A CN201010531010 A CN 201010531010A CN 101967647 A CN101967647 A CN 101967647A
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- internal mold
- boronising
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- boronizing
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Abstract
The invention discloses a solid boriding process of a cold-drawing inner die of a seamless steel pipe, which is used for solving the problems that the traditional surface carburization and chromeplating process of inner die metal has the disadvantages of serious pollution to the environment, short service life, high cost and the like because of the emission of waste liquid. The process comprises the steps of preparation and treatment, packaging, boriding treatment, heat treatment after boriding and cleaning and polishing.
Description
Affiliated technical field
The present invention relates to a kind of cold-drawing seamless tube internal mold solid boronizing technology, belong to metal rolled technical field.
Background technology
Traditional internal mold diffusion hardening chromium plating technology is the maximum a kind of original complete processing of present domestic related production enterprise's employing, and its shortcoming is that the discharging of waste liquid environmental pollution is serious, work-ing life is low, cost is high.
Summary of the invention
The purpose of this invention is to provide a kind of novel cold-drawing seamless tube internal mold solid boronizing technology, to overcome the deficiencies in the prior art.
For achieving the above object, the present invention adopts following technical scheme: novel seamless steel pipe cold-drawn internal mold solid boronizing technology provided by the invention comprises the steps:
One, the preparation of internal mold and processing;
Two, vanning;
Three, boronising is handled;
Four, the thermal treatment after the boronising;
Five, cleaning polishing;
The invention has the beneficial effects as follows: wear resistance is good, hot hardness is high, good heat resistance, and some corrosive medium is had certain resistance to corrosion; Easy to operate, do not need specific equipment, ooze that the back is cleaned easily, low, the non-environmental-pollution of cost.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Embodiment
In order to make those skilled in the art person understand the present invention program better, and above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the present invention is further detailed explanation below in conjunction with drawings and Examples.
As shown in Figure 1, cold-drawing seamless tube internal mold solid boronizing technology provided by the invention comprises the steps:
One, the preparation of internal mold and processing
Because of expansible trend is arranged after the internal mold boronising, thus require internal mold to be processed into the minus tolerance of final size, and require internal mold not have rust staining, oil stains-less.
Two, vanning
Before the vanning, internal mold boronizing agent and boronising case are dried together, in the boronising case that is welded into mild steel plate of then internal mold and boronizing agent being packed into.Packing method is: elder generation's thick boronizing agent of layer overlay 20～30mm at the bottom of case, put into internal mold again, the gap that keeps 10～15mm between intermode and internal mold and tank wall in two, pack boriding agent then, the internal mold upper surface covers the thick boronizing agent of 20～30mm, cover case lid and seal oven dry then with refractory mortar.
Three, boronising is handled
The boronising case integral body of oven dry is put into 930 ℃ process furnace carry out boronising and handle, boronising soaking time 3～5 hours, the boronising case is come out of the stove air-cooledly to below 300 ℃ after the internal mold boronising, opens the boronising case again and takes out internal mold.
Four, the thermal treatment after the boronising
With the internal mold after the boronising be placed on be heated to 830 ± 10 ℃ in the salt bath furnace after Water Quenching, then 180 ± 10 ℃ of tempering 3 hours.
Five, cleaning polishing.
Claims (5)
1. a cold-drawing seamless tube internal mold solid boronizing technology is characterized in that, comprises the steps:
One, the preparation of internal mold and processing;
Two, vanning;
Three, boronising is handled;
Four, the thermal treatment after the boronising;
Five, cleaning polishing.
2. a kind of cold-drawing seamless tube internal mold solid boronizing technology according to claim 1 is characterized in that, in the preparation of described step internal mold and the processing, requires internal mold to be processed into the minus tolerance of final size, and requires internal mold not have rust staining, oil stains-less.
3. a kind of cold-drawing seamless tube internal mold solid boronizing technology according to claim 1, it is characterized in that, in the described step vanning, before the vanning, internal mold boronizing agent and boronising case are dried together, then internal mold and boronizing agent are packed in the boronising case that is welded into mild steel plate, packing method is: elder generation's thick boronizing agent of layer overlay 20mm at the bottom of case, put into internal mold again, the gap that keeps 10mm in two between intermode and internal mold and tank wall, pack boriding agent then, the internal mold upper surface covers the thick boronizing agent of 20mm, cover case lid and seal oven dry then with refractory mortar.
4. a kind of cold-drawing seamless tube internal mold solid boronizing technology according to claim 1, it is characterized in that, during described step boronising is handled, the process furnace that the boronising case integral body of oven dry is put into 930 ℃ carries out the boronising processing, boronising soaking time 3～5 hours, the boronising case is come out of the stove air-cooledly to below 300 ℃ after the internal mold boronising, opens the boronising case again and takes out internal mold.
5. a kind of cold-drawing seamless tube internal mold solid boronizing technology according to claim 1, it is characterized in that, in the thermal treatment after the described step boronising, with the internal mold after the boronising be placed on be heated to 830 ± 10 ℃ in the salt bath furnace after Water Quenching, then 180 ± 10 ℃ of tempering 3 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010531010 CN101967647A (en) | 2010-10-24 | 2010-10-24 | Solid boriding process of cold-drawing inner die of seamless steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010531010 CN101967647A (en) | 2010-10-24 | 2010-10-24 | Solid boriding process of cold-drawing inner die of seamless steel pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101967647A true CN101967647A (en) | 2011-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN 201010531010 Pending CN101967647A (en) | 2010-10-24 | 2010-10-24 | Solid boriding process of cold-drawing inner die of seamless steel pipe |
Country Status (1)
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| CN (1) | CN101967647A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102626721A (en) * | 2012-04-13 | 2012-08-08 | 宜兴市创天管业有限公司 | Small-caliber spiral pipe cold drawing inner mold and surface coating treatment method |
| CN107794492A (en) * | 2017-11-18 | 2018-03-13 | 五河县黄淮粮油机械有限公司 | A kind of method of mould salt bath boronising |
| CN109468579A (en) * | 2018-11-29 | 2019-03-15 | 杨浩鹏 | A kind of mold targeting surface treatment method and boriding medium based on vacuum heat treatment |
| CN112090973A (en) * | 2020-09-08 | 2020-12-18 | 锦州捷通铁路机械股份有限公司 | Process for manufacturing high-performance seamless steel tube cold-drawing die by using low-carbon low-alloy steel |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1081209A (en) * | 1992-07-06 | 1994-01-26 | 机械电子工业部洛阳拖拉机研究所 | New particulate boronizing agent and compound method |
| WO2002075013A1 (en) * | 2001-03-21 | 2002-09-26 | Honda Giken Kogyo Kabushiki Kaisha | Steel material and method for preparation thereof |
| CN1603452A (en) * | 2004-10-29 | 2005-04-06 | 武汉理工大学 | Quick preparation method of metal surface boronizing layer |
-
2010
- 2010-10-24 CN CN 201010531010 patent/CN101967647A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1081209A (en) * | 1992-07-06 | 1994-01-26 | 机械电子工业部洛阳拖拉机研究所 | New particulate boronizing agent and compound method |
| WO2002075013A1 (en) * | 2001-03-21 | 2002-09-26 | Honda Giken Kogyo Kabushiki Kaisha | Steel material and method for preparation thereof |
| CN1603452A (en) * | 2004-10-29 | 2005-04-06 | 武汉理工大学 | Quick preparation method of metal surface boronizing layer |
Non-Patent Citations (1)
| Title |
|---|
| 《四川兵共学报》 20011231 叶宏等 Cr12MoV钢渗硼-淬火复合工艺研究 25-27 1-5 第22卷, 第4期 2 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102626721A (en) * | 2012-04-13 | 2012-08-08 | 宜兴市创天管业有限公司 | Small-caliber spiral pipe cold drawing inner mold and surface coating treatment method |
| CN107794492A (en) * | 2017-11-18 | 2018-03-13 | 五河县黄淮粮油机械有限公司 | A kind of method of mould salt bath boronising |
| CN109468579A (en) * | 2018-11-29 | 2019-03-15 | 杨浩鹏 | A kind of mold targeting surface treatment method and boriding medium based on vacuum heat treatment |
| CN112090973A (en) * | 2020-09-08 | 2020-12-18 | 锦州捷通铁路机械股份有限公司 | Process for manufacturing high-performance seamless steel tube cold-drawing die by using low-carbon low-alloy steel |
| CN112090973B (en) * | 2020-09-08 | 2022-03-15 | 锦州捷通铁路机械股份有限公司 | Process for manufacturing high-performance seamless steel tube cold-drawing die by using low-carbon low-alloy steel |
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Open date: 20110209 |