CN1522807A - Manufacturing method of special die for large-caliber cold-drawn seamless steel tube - Google Patents
Manufacturing method of special die for large-caliber cold-drawn seamless steel tube Download PDFInfo
- Publication number
- CN1522807A CN1522807A CNA031582095A CN03158209A CN1522807A CN 1522807 A CN1522807 A CN 1522807A CN A031582095 A CNA031582095 A CN A031582095A CN 03158209 A CN03158209 A CN 03158209A CN 1522807 A CN1522807 A CN 1522807A
- Authority
- CN
- China
- Prior art keywords
- heavy caliber
- particular manufacturing
- seamless pipe
- manufacturing craft
- roasting
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 39
- 229910000831 Steel Inorganic materials 0.000 title abstract description 14
- 239000010959 steel Substances 0.000 title abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000001816 cooling Methods 0.000 claims abstract description 12
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 8
- 238000005496 tempering Methods 0.000 claims abstract description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 150000003839 salts Chemical class 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910000851 Alloy steel Inorganic materials 0.000 claims abstract description 4
- 238000010622 cold drawing Methods 0.000 claims description 24
- 239000012267 brine Substances 0.000 claims description 11
- 238000005057 refrigeration Methods 0.000 claims description 11
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims description 11
- 238000003754 machining Methods 0.000 claims description 6
- 239000012266 salt solution Substances 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- 238000005271 boronizing Methods 0.000 claims description 3
- 238000010792 warming Methods 0.000 claims description 2
- 239000011159 matrix material Substances 0.000 abstract description 5
- 239000000956 alloy Substances 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 3
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
Landscapes
- Heat Treatment Of Articles (AREA)
Abstract
The manufacturing method of the special die for the large-caliber cold-drawn seamless steel tube adopts medium carbon low alloy steel (37CrMnMo) to be cut and processed into a special die blank for the large-caliber cold-drawn seamless steel tube, and then the die blank is subjected to high-temperature roasting, salt water cooling and low-temperature tempering heat treatment. The invention has scientific material selection and advanced and simple process. The working surface of the special die for the large-caliber cold-drawn seamless steel tube, which is manufactured by the medium-carbon low-alloy material (37CrMnMo) through the heat treatment means, has very high hardness and wear resistance, and the matrix has enough strength and toughness, so that the special die is suitable for producing the large-caliber cold-drawn seamless steel tube; the manufacturing cost is low and is about 1/40 of that of the hard alloy die with the same specification and model; the size of the die is stable, the service life is long, and the length of the seamless steel pipe with the large caliber can be continuously cold-drawn to be more than 300 meters; has good popularization and application value.
Description
Technical field
The present invention relates to a kind of cold-drawn and make the manufacture method of the particular manufacturing craft of heavy caliber seamless steel pipe, belong to the mold machining technology field.
Background technology
Be used to make the cold drawing die of weldless steel tube, the working-surface of mould need have suitable hardness and wear resistance, and matrix need have enough intensity and toughness.All the time, sintered-carbide die is because the hardness height, wear resistance is good and have certain intensity, occupies main status in small-sized cold-drawing seamless tube production.Along with the continuous development of colddrawing seamless pipe industry, heavy caliber seamless steel pipe cold-drawn industrial scale is in continuous expansion.And the large size sintered-carbide die breaks in the time spent of doing that is subjected to huge hoop stress easily because its matrix fragility is big, has seriously restricted production.Simultaneously, the big mould manufacture difficulty of Wimet is big, and material is expensive, the manufacturing cost height.
Summary of the invention
Purpose of the present invention is exactly that a kind of manufacture method that adopts the heavy caliber colddrawing seamless pipe particular manufacturing craft of low alloy material will be provided.Utilize the working-surface of the heavy caliber colddrawing seamless pipe particular manufacturing craft that present method produces that very high hardness and wear resistance are arranged, matrix has enough intensity and toughness, is suitable for the cold-drawn heavy caliber seamless steel pipe and uses.
The object of the present invention is achieved like this, the manufacture method of heavy caliber colddrawing seamless pipe particular manufacturing craft, adopt medium carbon low alloy steel (37CrMnMo) machining to make heavy caliber colddrawing seamless pipe particular manufacturing craft base, pass through high-temperature roasting, brine refrigeration, low-temperature tempering heat treatment again.Described high-temperature roasting, be after filling up pack boronizing medium in the heavy caliber colddrawing seamless pipe particular manufacturing craft base die cavity that machining is made, hang in the roasting pot, and roasting pot sealed, again roasting pot is hung in the pit furnace, with process furnace be warming up to 880 ℃-960 ℃ and be incubated 6-8 hour after, be cooled to 830 ℃-870 ℃ with stove and be incubated 3-4 hour again.Described brine refrigeration, be in process furnace, to hang out and to open the roasting cover together with roasting pot through the heavy caliber colddrawing seamless pipe particular manufacturing craft base of high-temperature roasting, go into to cool off in the salt solution 40-60 after second with anchor clamps clamping mould base, go out the salt water-air cooling and adopt the spray bucket to spray brine refrigeration 50-60 second simultaneously to the mould base, again the mould base is gone into brine refrigeration 20-30 after second, go out salt water-air cooling 50-60 after second, go into salt solution once more and stop 15-25 water outlet second.Described low-temperaturetempering is after tempering 5-6 hour, to hang out air cooling in 180 ℃ of-200 ℃ of process furnace through the heavy caliber colddrawing seamless pipe particular manufacturing craft base after high-temperature roasting, the brine refrigeration.Described brinish concentration is 5-10%.
Select materials science of the present invention, technology advanced person, simple.The heavy caliber colddrawing seamless pipe particular manufacturing craft that middle carbon and low-alloy material (37CrMnMo) produces by above-mentioned thermal treatment means, there are very high hardness and wear resistance in the mold work surface, matrix has enough intensity and toughness, and the production that is fit to the heavy caliber colddrawing seamless pipe is used; Low cost of manufacture is about 1/40 of same specification model sintered-carbide die; Die size is more stable, long service life, and cold-drawn heavy caliber seamless steel pipe length is more than 300 meters continuously; The excellent popularization using value is arranged.
Embodiment
Adopt medium carbon low alloy steel (37CrMnMo) machining to make heavy caliber colddrawing seamless pipe particular manufacturing craft base, will fill up pack boronizing medium in the mould base die cavity, hang in then in the cylinder of steel (roasting pot), and cylinder of steel is sealed.Cylinder of steel is hung in the pit furnace internal heating, after treating that furnace temperature rises to 920 degree and is incubated 7 hours, be cooled to 850 degree insulations 3.5 hours with stove, in stove, hang out jar and open cover then, hanging in concentration with unit clamp clamping mould is cooling 50 seconds in 8% the salt solution, goes out water-air cooling again, adopts spray bucket spray salt solution simultaneously, cooling die die cavity 55 seconds, and then mould gone into brine refrigeration 25 seconds.Went out water-air cooling again 55 seconds, and reentered water and stop water outlet in 20 seconds; Then tempering 5.5 hours in 190 ℃ of stoves immediately hangs out air cooling at last, produces qualified heavy caliber colddrawing seamless pipe particular manufacturing craft.
Claims (5)
1, a kind of manufacture method of heavy caliber colddrawing seamless pipe particular manufacturing craft is characterized in that adopting the medium carbon low alloy steel machining to make heavy caliber colddrawing seamless pipe particular manufacturing craft base, passes through high-temperature roasting, brine refrigeration, low-temperature tempering heat treatment again.
2, the manufacture method of heavy caliber colddrawing seamless pipe particular manufacturing craft according to claim 1, it is characterized in that described high-temperature roasting, be after filling up pack boronizing medium in the heavy caliber colddrawing seamless pipe particular manufacturing craft base die cavity that machining is made, hang in the roasting pot, and roasting pot sealed, again roasting pot is hung in the pit furnace, with process furnace be warming up to 880 ℃-960 ℃ and be incubated 6-8 hour after, be cooled to 830 ℃-870 ℃ with stove and be incubated 3-4 hour again.
3, the manufacture method of heavy caliber colddrawing seamless pipe particular manufacturing craft according to claim 1, it is characterized in that described brine refrigeration, be in process furnace, to hang out and to open the roasting cover together with roasting pot through the heavy caliber colddrawing seamless pipe particular manufacturing craft base of high-temperature roasting, go into to cool off in the salt solution 40-60 after second with anchor clamps clamping mould base, go out the salt water-air cooling and adopt the spray bucket to spray brine refrigeration 50-60 second simultaneously to the mould base, again the mould base is gone into brine refrigeration 20-30 after second, go out salt water-air cooling 50-60 after second, go into salt solution once more and stop 15-25 water outlet second.
4, the manufacture method of heavy caliber colddrawing seamless pipe particular manufacturing craft according to claim 1, it is characterized in that described low-temperaturetempering, be in 180 ℃ of-200 ℃ of process furnace, after tempering 5-6 hour, to hang out air cooling through the heavy caliber colddrawing seamless pipe particular manufacturing craft base after high-temperature roasting, the brine refrigeration.
5, the manufacture method of heavy caliber colddrawing seamless pipe particular manufacturing craft according to claim 1 is characterized in that described brinish concentration is 5-10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03158209 CN1241691C (en) | 2003-09-08 | 2003-09-08 | Manufacturing method of special die for large-caliber cold-drawn seamless steel tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03158209 CN1241691C (en) | 2003-09-08 | 2003-09-08 | Manufacturing method of special die for large-caliber cold-drawn seamless steel tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1522807A true CN1522807A (en) | 2004-08-25 |
| CN1241691C CN1241691C (en) | 2006-02-15 |
Family
ID=34287179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03158209 Expired - Fee Related CN1241691C (en) | 2003-09-08 | 2003-09-08 | Manufacturing method of special die for large-caliber cold-drawn seamless steel tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1241691C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101318839B (en) * | 2008-07-03 | 2011-06-29 | 上海交通大学 | Silicon carbide ceramic and method for manufacturing composite drawing mould of diamond |
| CN103203363A (en) * | 2013-04-30 | 2013-07-17 | 无锡大博金机械有限公司 | Modified elongation mandrel for seamless steel tube rolling mill and production method of same |
-
2003
- 2003-09-08 CN CN 03158209 patent/CN1241691C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101318839B (en) * | 2008-07-03 | 2011-06-29 | 上海交通大学 | Silicon carbide ceramic and method for manufacturing composite drawing mould of diamond |
| CN103203363A (en) * | 2013-04-30 | 2013-07-17 | 无锡大博金机械有限公司 | Modified elongation mandrel for seamless steel tube rolling mill and production method of same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1241691C (en) | 2006-02-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103074471B (en) | Roller-type spheroidizing annealing production line and isothermal spheroidizing annealing method | |
| CN101693943A (en) | High speed steel tool heat treatment method | |
| CN101121954B (en) | H13 steel vacuum time-control quenching heat treatment technique | |
| CN102312112A (en) | Composite modifier for improving thermal fatigue performances of aluminum-silicon alloy | |
| CN105755224A (en) | Quick spheroidal annealing thermal treatment process for Cr12 extruded seamless steel tube | |
| CN102676785A (en) | Induction hardening process capable of hardening hard-alloy cast iron camshaft | |
| CN101660165A (en) | Heat treatment process of preparing bearing roller by using G20CrNi2MoA steel instead of G20Cr2Ni4A steel | |
| CN1241691C (en) | Manufacturing method of special die for large-caliber cold-drawn seamless steel tube | |
| CN106119511B (en) | 9Cr2Mo smoothing roll heat treatment methods based on exhaust quenching technical | |
| CN104451348B (en) | Preparation method of high-hardness and high-strength expanding pyramid of mechanical expanding mill | |
| CN104651581A (en) | Heat treatment workshop afterheat utilization system | |
| CN101993985B (en) | Constant temperature process equipment and method as well as constant temperature quenching device and method of forge piece waste heat | |
| CN201386124Y (en) | Cooling circulating mechanism of heat treatment system for seamless rings | |
| CN104451095B (en) | A kind of heat treatment method of the expanding cone of 7CrSiMnMoV | |
| CN114369702A (en) | Quenching method of Cr12 roller | |
| CN111100976A (en) | Heat treatment process for preventing cracking of steel for glass mold after forging | |
| CN203112875U (en) | Roller type spheroidizing annealing production line | |
| CN210394459U (en) | Quenching heat preservation equipment | |
| CN104152638B (en) | Micro-deformation quenching heat treatment process of cold work die steel thin workpiece | |
| CN112080627A (en) | Recrystallization annealing process of GCr15 bearing steel wire well type annealing furnace | |
| CN100561023C (en) | The production technology of fitting of high-pressure valve | |
| CN102703666B (en) | Low-carbon alloy steel spheroidizing method | |
| CN104480270A (en) | Waste heat treatment method for high manganese steel and part of alloy steel | |
| CN114959215B (en) | 7-series aluminum alloy hot extrusion die steel and heat treatment method thereof | |
| CN106282496B (en) | A kind of Heavy Straightening Roller processing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: YANGZHOU CHENGDE STEEL TUBE CO., LTD. Free format text: FORMER OWNER: JIANGSU CHENGDE STEELPIPE CO., LTD. Effective date: 20081024 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20081024 Address after: Jiangsu Province Jiangdu Cheng Road No. 1 Patentee after: Yangzhou Chengde Steel Pipe Co., Ltd. Address before: Jiangsu Province Jiangdu Cheng Road No. 1 Patentee before: Jiangsu Chengde Steelpipe Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060215 Termination date: 20150908 |
|
| EXPY | Termination of patent right or utility model |