CN101070561A - Through-hole top-end heat-treatment processing process - Google Patents
Through-hole top-end heat-treatment processing process Download PDFInfo
- Publication number
- CN101070561A CN101070561A CN 200610040274 CN200610040274A CN101070561A CN 101070561 A CN101070561 A CN 101070561A CN 200610040274 CN200610040274 CN 200610040274 CN 200610040274 A CN200610040274 A CN 200610040274A CN 101070561 A CN101070561 A CN 101070561A
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- China
- Prior art keywords
- stove
- temperature
- treatment processing
- ethyl alcohol
- processing process
- 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
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 9
- 238000000034 method Methods 0.000 title claims description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 24
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 12
- 238000002791 soaking Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 241001062472 Stokellia anisodon Species 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 3
- 238000009472 formulation Methods 0.000 claims description 3
- 238000010079 rubber tapping Methods 0.000 claims description 3
- 238000010792 warming Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 235000019441 ethanol Nutrition 0.000 abstract 3
- 238000003754 machining Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 7
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000005242 forging Methods 0.000 description 3
- 238000007669 thermal treatment Methods 0.000 description 3
- 241001417490 Sillaginidae Species 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910052758 niobium Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- 238000005275 alloying Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Landscapes
- Heat Treatment Of Steel (AREA)
Abstract
One kind of perforation head heat treatment processing craft, when the temperature of stove reach to 820degree C-980degree C, according to the formula allocated proportion to smelt, after machining, then send the perforation head to stove, passing over nitrogen 700-900m3/h, proper ethyl alcohol; when temperature was controlled to 900degree C -1100degree C, passing over nitrogen 200-400m3/h, ethyl alcohol 17-42 drop /min, water 12-38ml/min, control the stove press 50-190Pa, soaking time2-5h; the temperature Decrease along with the stove, passe over nitrogen 130-400m3/h, ethyl alcohol 15-38 drop/min, the temperature of out of stove is700degree C-980degree C. This invention enable the perforation head intensity to obtain highly enhancement, the service life is two or three times than the aborad product, and reduce the production cost.
Description
Technical field: the present invention relates to the perforating head that a kind of rolling seamless steel pipe is used, particularly relate to the heat-treatment processing process of a kind of perforating head that is mainly used to process the used stainless-steel seamless pipe of boiler of power plant.
Technical background: at a lot of metallurgy industries of China, when piercing weldless steel tube, all adopt perforating head, this class perforating head generally can only penetrate the softer steel pipe of material.If produce the employed boi1er tube of boiler, then be difficult to penetrate, these class steel generally all adopt stainless steel as base material, have rigidity and hardness than Strong, generally all adopt external perforating head when producing this series products.On the one hand, must adopt a large amount of foreign exchanges just can buy the price comparison costliness; On the other hand, when reality was used, the perforating head of general import because the material of material is hard, will be scrapped when piercing two, three stainless-steel seamless pipes when piercing stainless-steel seamless pipe, is unfavorable for the production in enormous quantities of enterprise, and the production cost height.
Summary of the invention: purpose of the present invention is exactly the heat-treatment processing process that a kind of perforating head will be provided, and it can overcome the defective of external like product effectively, can reach two to three times of external like product its work-ing life.The weight percent of the Chemical Composition of perforating heading material of the present invention has: C is 0.19-0.39%, Cr is 0.2-1.4%, Ni is 0.35-2.0%, Co is 0.3-1.8%, and Si is 0.1-1.0%, and Mn is 0.1-0.9%, Mo is 0.3-2.3%, W is 0.5-4%, and Nb is 0.1-1.3%, and all the other are Fe and a small amount of other element.The object of the present invention is achieved like this, and a kind of heat-treatment processing process of perforating head is when temperature in the stove is warming up to 820 ℃-980 ℃, smelts after the good perforating head of mechanical workout is sent in the stove by formulation ratio, feeds nitrogen 700-900m
3/ h, alcohol is an amount of; When temperature is controlled at 900 ℃-1100 ℃, feed nitrogen 200-400m
3/ h, alcohol 17-42 drips/min, water 12-38ml/min, furnace pressure is controlled at 50-190Pa, soaking time 2-5h; With the stove cooling, feed nitrogen 130-400m
3/ h, alcohol 15-38 drips/min, 700 ℃-980 ℃ of tapping temperatures.The present invention is owing to added alloying element, make the Strong degree of perforating head obtain significantly improving, the necessary rigidity of Ke Yi Full foot perforation not only, also has good heat resistance simultaneously, when piercing stainless-steel seamless pipe, be two to three times of similar external product work-ing life, thereby reduced production cost significantly, and can save foreign exchange in large quantities.
Description of drawings: Fig. 1 is the process curve figure of heat treatment process of the present invention; In the drawings, ℃ expression temperature, h represents the time.
Embodiment: the weight percent of the Chemical Composition of perforating heading material of the present invention has: C is 0.19-0.39%, Cr is 0.2-1.4%, Ni is 0.35-2.0%, Co is 0.3-1.8%, and Si is 0.1-1.0%, and Mn is 0.1-0.9%, Mo is 0.3-2.3%, W is 0.5-4%, and Nb is 0.1-1.3%, and all the other are Fe and a small amount of other element.Join in the stove by service requirements and to smelt.The top blank can adopt foundry goods or direct production to become forging when coming out of the stove.When producing foundry goods, after the excision of foundry goods dead head, should leave certain process redundancy.When producing to forging, its forging burn-off phenomenon that do not have.Carry out the thermal treatment of mechanical workout and top then on request.The heat-treatment processing process of a kind of perforating head of the present invention is when temperature in the stove is warming up to 900 ℃, smelts after the good perforating head of mechanical workout is sent in the stove by formulation ratio, feeds nitrogen 800m
3/ h, alcohol is an amount of; When temperature is controlled at 1000 ℃, feed nitrogen 300m
3/ h, 30/min of alcohol, water 25ml/min, furnace pressure is controlled at 120Pa, soaking time 3.5h; With the stove cooling, feed nitrogen 265m
3/ h, 27/min of alcohol during 840 ℃ of tapping temperatures, takes out product.During concrete enforcement, when the thermal treatment of top, the internal layer zone of oxidation depth of top should be less than 0.1mm, and matrix hardness should be not less than 270HBS, and has the microstructure that adapts with material and thermal treatment process.
Claims (1)
1. the heat-treatment processing process of a perforating head,, be when temperature in the stove is warming up to 820 ℃-980 ℃, smelt after the good perforating head of mechanical workout is sent in the stove by formulation ratio, feed nitrogen 700-900m
3/ h, alcohol is an amount of; When temperature is controlled at 900 ℃-1100 ℃, feed nitrogen 200-400m
3/ h, alcohol 17-42 drips/min, water 12-38ml/min, furnace pressure is controlled at 50-190Pa, soaking time 2-5h; With the stove cooling, feed nitrogen 130-400m
3/ h, alcohol 15-38 drips/min, during 700 ℃-980 ℃ of tapping temperatures, takes out product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610040274 CN101070561A (en) | 2006-05-12 | 2006-05-12 | Through-hole top-end heat-treatment processing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610040274 CN101070561A (en) | 2006-05-12 | 2006-05-12 | Through-hole top-end heat-treatment processing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101070561A true CN101070561A (en) | 2007-11-14 |
Family
ID=38897976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610040274 Pending CN101070561A (en) | 2006-05-12 | 2006-05-12 | Through-hole top-end heat-treatment processing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101070561A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942610A (en) * | 2010-08-05 | 2011-01-12 | 黄贞益 | Piercing plug for hot-rolled seamless steel pipe and processing technology thereof |
| CN102383086A (en) * | 2011-11-09 | 2012-03-21 | 天津机辆轨道交通装备有限责任公司 | Medium-temperature oxidation process for plug |
| CN102586700A (en) * | 2012-03-05 | 2012-07-18 | 宜兴市景程模具有限公司 | High alloy tube piercing plug material and manufacturing method and surface processing method thereof |
| CN105369151A (en) * | 2014-08-19 | 2016-03-02 | 新报国制铁株式会社 | Piercing point for seamless pipe manufacturing |
| CN106148818A (en) * | 2016-06-23 | 2016-11-23 | 南通市嘉业机械制造有限公司 | The manufacture method of a kind of piercing plug for seamless steel tubes and temperature control system thereof |
| CN106319185A (en) * | 2015-06-29 | 2017-01-11 | 南通市嘉业机械制造有限公司 | Heat treatment processing technology of plug |
| CN111996452A (en) * | 2020-08-07 | 2020-11-27 | 上海大学 | High-alloy seamless steel pipe perforated plug and preparation method thereof |
-
2006
- 2006-05-12 CN CN 200610040274 patent/CN101070561A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942610A (en) * | 2010-08-05 | 2011-01-12 | 黄贞益 | Piercing plug for hot-rolled seamless steel pipe and processing technology thereof |
| CN102383086A (en) * | 2011-11-09 | 2012-03-21 | 天津机辆轨道交通装备有限责任公司 | Medium-temperature oxidation process for plug |
| CN102586700A (en) * | 2012-03-05 | 2012-07-18 | 宜兴市景程模具有限公司 | High alloy tube piercing plug material and manufacturing method and surface processing method thereof |
| CN105369151A (en) * | 2014-08-19 | 2016-03-02 | 新报国制铁株式会社 | Piercing point for seamless pipe manufacturing |
| CN106319185A (en) * | 2015-06-29 | 2017-01-11 | 南通市嘉业机械制造有限公司 | Heat treatment processing technology of plug |
| CN106148818A (en) * | 2016-06-23 | 2016-11-23 | 南通市嘉业机械制造有限公司 | The manufacture method of a kind of piercing plug for seamless steel tubes and temperature control system thereof |
| CN111996452A (en) * | 2020-08-07 | 2020-11-27 | 上海大学 | High-alloy seamless steel pipe perforated plug and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20071114 |