CN104975235A - High-toughness medium-carbon quenched and tempered round steel of grade 120 KSI and manufacturing method thereof - Google Patents
High-toughness medium-carbon quenched and tempered round steel of grade 120 KSI and manufacturing method thereof Download PDFInfo
- Publication number
- CN104975235A CN104975235A CN201510425821.4A CN201510425821A CN104975235A CN 104975235 A CN104975235 A CN 104975235A CN 201510425821 A CN201510425821 A CN 201510425821A CN 104975235 A CN104975235 A CN 104975235A
- Authority
- CN
- China
- Prior art keywords
- steel
- round steel
- grade
- equal
- less
- 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
Abstract
The invention discloses high-toughness medium-carbon quenched and tempered round steel of the grade 120 KSI. The high-toughness medium-carbon quenched and tempered round steel of the grade 120 KSI comprises, by mass, 0.35%-0.50% of C, 0.15%-0.40% of Si, 0.60%-1.30% of Mn, equal to or less than 0.015% of P, equal to or less than 0.040% of S, 0.75%-1.30% of Cr, 0.15%-0.35% of Mo, equal to or less than 0.25% of Ni, equal to or less than 0.25% of Cu, 0.015%-0.040% of Alt, equal to or less than 0.10% of V, equal to or less than 0.10% of Nb, equal to or less than 0.05% of Ti, equal to or less than 0.008% of N, equal to or less than 0.0010% of B and the balance Fe and unavoidable impurity elements, wherein the content of V, the content of Nb and the content of Ti are not equal to or less than 0.010% at the same time. The round steel with the maximum specification reaching 260 mm is manufactured through Kanbara reactor (KR) pretreatment, basic oxygen furnace (BOF) smelting, ladle furnace (LF) refining, Ruhrstahl Heraeus (RH) vacuum degassing, continuous casting, heating, continuous rolling, and hardening and tempering, so that the requirements for high specifications and toughness are met.
Description
Technical field
The present invention relates to 120KSI grade of steel round steel and manufacture method, be specifically related to a kind of adopt that casting and rolling process is produced, still there is when yield strength reaches 120KSI grade of steel higher plasticity and normal temperature, the modified round steel of low-temperature impact toughness and manufacture method thereof.
Background technology
4140, carbon quenched and tempered steel hardening capacity is high in 4137,4145 etc., and the comprehensive mechanical performances such as intensity, plasticity and toughness are good, are widely used in the fields such as oil field, wind-powered electricity generation, machinery.But along with the development of every profession and trade, the requirement of client to material is more and more higher, these steel adopting traditional way to produce have been difficult to meet service requirements.As the quenched and tempered steel on oil well drill pipe equipment, domestic and external most drill collar mechanical property all adopts API API standard at present.In recent years along with the progressively consumption of petroleum-based energy, the development requirement of deep-well, ultra deep well and extremely frigid zones oil well is original more urgent, on the basis of former API standard-required, drill collar steel intensity and toughness reguirements is improved constantly with the client that the world 5 elephant equipment such as national of the United States's oil well, Schlumberger and service company are representative, for 4145 drill collar steels, traditional API and client high tough require as shown in the table:
Table 1 API 7-1 standard and high tough 4145 mechanical property requirements contrasts
In contrast table 1, data are known, and the sample position of high tough 4145 is added by 25mm under surface and is deep to 1/2 radius, and for 241.3mm bar, sampling depth becomes 60mm from 25mm under surface.Further increase yield strength index on this basis, and add 1/2 radius hardness and-20 DEG C of low-temperature impact requirements, can find out, bar specification is larger, higher to the through hardening Capability Requirement of starting material and equipment, production difficulty is larger, and current domestic each steel mill and thermal treatment producer all can not ensure so high performance requriements.
The patent of invention of publication number CN102330027 discloses the elementary sulfur resistant drill pipe of a kind of 120KSI grade of steel and preparation method, in these steel, noble metal Mo content is minimum also wants 0.5%, be 0.6% in embodiment, raw materials cost is very high, C content is between 0.24% ~ 0.30%, hardening capacity is poor, be difficult to the thermal treatment needs meeting major diameter bar or thick-wall tube (as drill collar), the mode that must ectonexine be adopted after being processed into pipe fitting to spray water reaches 120KSI rank mechanical property, processing and thermal treatment cost very high, clearly maximum available stock specification and mechanical property sampling depth is not had in this patent.
Summary of the invention
Technical problem to be solved by this invention provides a kind of 120KSI grade of steel for above-mentioned prior art, yield strength reaches the tough middle carbon quenched and tempered steel of height of 827MPa, its diameter can reach 254mm, in inspection by sampling within the two/Radius of surface, yield strength >=827MPa, tensile strength >=965MPa, unit elongation >=16%, relative reduction in area >=45%, room temperature and-20 DEG C of Charpy-V impact power >=60J, surface hardness can be controlled in below 341HB, can be used for the parts manufacturing large gauge oil well drill collar, drilling rod, drill pipe sub, the contour tough requirement of box cupling.
Another technical problem to be solved by this invention provides a kind of method for making steel manufacturing above-mentioned 120KSI grade of steel, the modified round steel of high tough middle carbon for above-mentioned prior art present situation.
The present invention solves the problems of the technologies described above adopted technical scheme, the modified round steel of the high tough middle carbon of a kind of 120KSI grade of steel, the chemical composition of this round steel is C:0.35 ~ 0.50% by mass percentage, Si:0.15 ~ 0.40%, Mn:0.60 ~ 1.30%, P :≤0.015%, S :≤0.040%, Cr:0.75 ~ 1.30%, Mo:0.15 ~ 0.35%, Ni :≤0.25%, Cu :≤0.25%, Alt:0.015-0.040%, V :≤0.10%, Nb :≤0.10%, Ti :≤0.05%, N :≤0.008%, B :≤0.0010%, surplus is Fe and inevitable impurity element, wherein V, when the content of Nb is different≤0.010%.
Preferably, the interpolation array mode of described V, Nb, Ti: Nb, or V, or Ti, Nb, or Nb, V, or Ti, Nb, V.
Height of the present invention is tough, the chemical composition of anti-H 2 S stress corrosion drilling tool round steel is determined like this:
C: increase material hardening capacity, intensity and hardness, but reduce plasticity and toughness, raise ductile-brittle transition temperature, material HIC susceptibility is strengthened, in order to reach the requirement of 120KSI grade of steel intensity, carbon content during the present invention adopts.It is 0.35 ~ 0.50% that the present invention controls its content.
Si: be the deoxidant element in steel, and the intensity improving steel with solution strengthening form.Si content lower than 0.10% time, deoxidation effect is poor, when Si content is higher reduce toughness.It is 0.15 ~ 0.4% that Si content of the present invention controls.
Mn: be the element improving steel hardenability, and play the intensity that solution strengthening effect improves steel.But Mn easily promotes that harmful element P etc. is to grain boundary segregation, causes hydrogen to cause grain boundary fracture.When carrying out large-size round steel rolling or forging, the content of control Mn is of crucial importance, and in order to reach the equilibrium of intensity and size, Mn content of the present invention controls 0.60 ~ 1.30%.
Cr, Mo: increase material hardening capacity and obdurability, form passive film on steel surface, can reduce steel at H
2uniform corrosion in S, and the diffusion carbide formed is the strong trap of hydrogen, in addition, Mo also has reduction ductile-brittle transition temperature, suppress temper brittleness, improve carbon, niobium nitride precipitation strength effect, suppress granular ferrite, hinder the effects such as P segregation, but Mo belongs to precious metal, manufacturing cost is drawn high in the too high meeting of addition, therefore, Cr content controls to control 0.15 ~ 0.35% at 0.75 ~ 1.30%, Mo content by the present invention.
Ni: be improve steel hardening capacity and significantly can improve the element of its low-temperature flexibility, On Impact Toughness and ductile-brittle transition temperature have desirable influence.But will significantly increase the carbon equivalent of material when Ni content is too high, and be unfavorable for the welding property of steel.In addition, Ni is also noble metal, and too high levels can increase cost.Consider, Ni of the present invention exists with the form of residual element, and its content controls≤0.25%, is conducive to reaching optimum cost performance.
V: be the element that V (C, N) is separated out, can significantly improve the intensity of steel with the form of disperse educt.If but addition is too high, can worsens the thermoplasticity of steel equally, cause continuous casting crackle, and reduce the toughness of steel, its content controls≤0.1%.
Nb: be a kind of element grain refining being played to remarkable effect in the operation of rolling.At recrystallize rolling sequence, Nb hinders the recovery and recrystallization of deformed austeaite thus crystal grain thinning by strain induced precipitate, and this, with regard to providing the foundation for round steel still has tiny tissue after modifier treatment, is conducive to improving its toughness.But by the impact of C containing quantitative limitation and Heating temperature, too high Nb cannot solid solution, and does not play effect and increase cost equally, therefore, the present invention controls its content≤0.10%.
Ti: mainly play nitrogen fixation, Ti solidify at continuously cast bloom and are combined with N early stage, at intra-die formation TiN particle, thus reduce thick NbN and produce at solidified front, improve the continuous casting performance of steel.And reduce Nb(C, N) and V(C, N) Precipitation Temperature, make precipitate more tiny, increase while precipitating reinforcing effect, ensure enough plasticity and toughness, its content controls≤0.05%.
Except Ti, Nb and V all can add separately, or together adds with other two kinds of microalloy elements, plays crystal grain thinning and precipitation strength effect.
Cu: hardening capacity and the corrosion resistance nature that can improve steel plate, reduces the hydrogen induced cracking susceptibility of steel.But too high Cu content is unfavorable for the welding property of steel, and easily produce copper brittleness phenomenon, worsen the surface property of steel, Cu of the present invention exists in the mode of residual element, and content is≤0.25%.
Al: mainly play fixed nitrogen and desoxydatoin.Al and N combines the AlN that formed can crystal grain thinning effectively, but too high levels can damage the toughness of steel, and worsens molten steel casting, the present invention has designed addition means and the addition of Ti, V, Nb, Alt exists as the residual element after deoxidation, 0.015-0.040%.
B: be the most significant element of hardening capacity improving steel, but because of C content of the present invention higher, the effect of B is weakened, in the present invention as residual element, content≤0.0010%.
S, P: the segregation of phosphorus promotes that HIC is formed, sulphur forms the most advanced and sophisticated strip of band and is mingled with, and easily makes H atom assemble and forms stress.The present invention's control P≤0.015%, S≤0.040%.
Another object of the present invention is to provide the manufacture method of the modified round steel of the high tough middle carbon of above-mentioned 120KSI grade of steel, processing step is as follows: raw materials for metallurgy successively through KR hot metal pretreatment, converter smelting or electrosmelting, LF refining, RH is degassed or VD is degassed produces molten steel, at RH, the degassed or degassed broken sky of VD is afterwards by feeding silicon-calcium wire or calcium iron wire carries out Calcium treatment; Molten steel adopts the omnidistance argon for protecting pouring of the low overheat of 15 ~ 40 DEG C to become continuous cast round billets or square billet, and continuously cast bloom send through 300 ~ 600 DEG C of temperature or enters burial pit slow cooling more than 48 hours, goes out hole; Continuously cast bloom is heated to 1200 ~ 1250 DEG C, is incubated 5 ~ 15 hours, comes out of the stove; Open rolling in the temperature range of 1100 ~ 1150 DEG C after high-pressure water descaling, rolls into round steel bar; Burial pit slow cooling is entered after rolling bar completes; Modifier treatment is directly carried out to the bar after slow cooling and obtains drilling tool modified round steel, or the bar after slow cooling is first annealed and holes, carry out modified to the non-solid bar that boring obtains afterwards, or adopt die forging mode first to make half-finished parts to carry out modified again.
Above-mentioned hardening and tempering process comprises Quench and temper, and quenching temperature is 840 ~ 900 DEG C, and time inside furnace is 180 ~ 600min, uses quench rings shrend; Tempering Heating temperature is 550 ~ 650 DEG C, and time inside furnace is 240 ~ 600min, and after coming out of the stove, air cooling or water-cooled are to room temperature.
Preferably, described Quench and temper technique is carried out in roller bottom type continuous oven.
Above-mentioned annealing process be by slow cooling after bar be heated to 650 ~ 720 DEG C, soaking time 5 ~ 15 hours, air cooling after stove is chilled to 450 ~ 550 DEG C.
The present invention is directed to the demand of oil well drill pipe to 120KSI high strength, high tenacity drilling tool steel; use continuously cast bloom that Composition Design, the molten steel of high cleanliness, inclusion balling process, the omnidistance argon for protecting pouring of low overheat optimized are produced as blank, by follow-up rolling and in continuous roller-hearth heat treatment furnace bar overall Tempering and Quenching produces hardened depth, heat-treated sturcture is even, segregation is little, have high intensity, the drilling tool manufacture round steel of toughness.The round steel maximum diameter of manufacture of the present invention can reach 260mm.
Compared with prior art, the invention has the beneficial effects as follows,
(1) darker, the heat-treated sturcture of more tiny, the quench-hardened case of steel crystal grain evenly, when strength level is suitable, yield strength, unit elongation, relative reduction in area, impelling strength especially low-temperature impact toughness improve fairly obvious.260mm and following specification are in inspection by sampling within the two/Radius of surface, yield strength >=827MPa, tensile strength >=965MPa, unit elongation >=16%, relative reduction in area >=50%, room temperature and-20 DEG C of Charpy-V impact power >=60J, surface hardness can be controlled in below 341HB, meets the high-strong toughness requirement of oil well drill collar, drilling rod, the first-class oil mining key stressed member of drilling rod connecting.
(2) round steel of manufacture of the present invention adopts roller bottom type continuous oven to carry out modifier treatment, overall hardened depth, heat-treated sturcture are even, stable mechanical performance, loss is few, makes it one of important factor realizing large gauge production under the prerequisite ensureing round steel mechanical property.
Embodiment
For a more detailed description to technical scheme of the present invention below in conjunction with preferred embodiment of the present invention.
Embodiment 1
The diameter of the modified round steel of the high tough middle carbon of the 120KSI grade of steel that the present embodiment relates to is 254mm, and grade of steel is 4145, and its chemical composition is by mass percentage: C:0.45%, Si:0.25 %, Mn:1.15%, P:0.009%, S:0.003%, Cr:1.15%, Mo:0.32%, Ni:0.05%, Cu:0.05%, Al:0.025%, V:0.04%, Nb:0.025%, N:0.0368%, B:0.0003%, surplus is iron and inevitable impurity element.
The manufacturing process of above-mentioned drilling tool round steel is, KR hot metal pretreatment, converter smelting, LF refining, RH vacuum outgas is carried out successively to obtain the higher molten steel of purity by above-mentioned chemical constitution configuration raw materials for metallurgy, carry out Calcium treatment at the broken empty rear feeding silicon-calcium wire of RH refining, make inclusion balling, be evenly distributed; Molten steel adopts the omnidistance argon for protecting pouring of the low overheat of 20 DEG C to become continuous cast round billets, continuous cast round billets is sent into burial pit slow cooling more than 48 hours, goes out hole; Continuous cast round billets is heated to 1200 DEG C, is incubated 5 hours, comes out of the stove; Open rolling in the temperature range of 1100 ~ 1150 DEG C after high-pressure water descaling, rolls into round steel bar; Burial pit slow cooling is entered after rolling bar completes; Bar after slow cooling is sent into roller bottom type continuous oven to carry out modified, modifiedly comprises Quench and temper, quenching temperature 860 DEG C, at stove 300min, use quench rings shrend, tempering Heating temperature is 600 DEG C, at stove 480min, after coming out of the stove, water-cooled is to room temperature, obtains and uses modified round steel.This round steel contrasts in table 1 with the mechanical property with grade of steel steel.
The mechanical property of the modified round steel of the high tough middle carbon of 120KSI grade of steel in table 1 embodiment 1
Embodiment 2
The diameter of the modified round steel of the high tough middle carbon of the 120KSI grade of steel that the present embodiment relates to is 177.8mm, and grade of steel is 4140, and its chemical composition is by mass percentage: C:0.41%, Si:0.25 %, Mn:0.95%, P:0.010%, S:0.003%, Cr:1.05%, Mo:0.22%, Ni:0.02%, Cu:0.02%, Al:0.028%, Ti:0.01%, Nb:0.025%, N:0.00559%, B:0.0005%, surplus is iron and inevitable impurity element.
The manufacturing process of above-mentioned drilling tool round steel is, KR hot metal pretreatment, converter smelting, LF refining, RH vacuum outgas is carried out successively to obtain the higher molten steel of purity by above-mentioned chemical constitution configuration raw materials for metallurgy, carry out Calcium treatment at the broken empty rear feeding silicon-calcium wire of RH refining, make inclusion balling, be evenly distributed; Molten steel adopts the omnidistance argon for protecting pouring of the low overheat of 20 DEG C to become continuous casting square billet, continuous casting square billet is sent into burial pit slow cooling more than 48 hours, goes out hole; Continuous casting square billet is heated to 1250 DEG C, is incubated 5 hours, comes out of the stove; Open rolling in the temperature range of 1100 ~ 1150 DEG C after high-pressure water descaling, rolls into round steel bar; Burial pit slow cooling is entered after rolling bar completes; Bar after slow cooling is sent into roller bottom type continuous oven anneal, be heated to 700 DEG C, soaking time 8 hours, air cooling after stove is chilled to 450 ~ 550 DEG C, then holes, last Tempering and Quenching, modifiedly comprise Quench and temper, quenching temperature 840 DEG C, at stove 240min, uses quench rings shrend, tempering Heating temperature is 580 DEG C, at stove 360min, after coming out of the stove, water-cooled is to room temperature, obtains modified round steel.
The smelting of this embodiment round steel and rolling technology substantially identical with embodiment 1, essential difference is that specification is less, composition adopt 4140.From following table, on the basis that intensity is suitable, the present embodiment product unit elongation, relative reduction in area, normal temperature impact and low-temperature impact toughness higher, for the manufacture of the tough drill section of 120KSI grade high-strength.This round steel contrasts in table 2 with the mechanical property with grade of steel steel.
The mechanical property of the modified round steel of the high tough middle carbon of 120KSI grade of steel in table 2 embodiment 2
Embodiment 3
The diameter of the modified round steel of the high tough middle carbon of the 120KSI grade of steel that the present embodiment relates to is 170mm, and grade of steel is 4137, and its chemical composition is by mass percentage: C:0.37%, Si:0.26%, Mn:0.96%, P:0.010%, S:0.003%, Cr:1.16%, Mo:0.33%, Ni:0.10%, Cu:0.02%, Al:0.028%, Ti:0.012%, Nb:0.026%, V:0.025%, N:0.00354%, B:0.0005%, surplus is iron and inevitable impurity element.
The manufacturing process of above-mentioned drilling tool round steel is, KR hot metal pretreatment, converter smelting, LF refining, RH vacuum outgas is carried out successively to obtain the higher molten steel of purity by above-mentioned chemical constitution configuration raw materials for metallurgy, carry out Calcium treatment at the broken empty rear feeding silicon-calcium wire of RH refining, make inclusion balling, be evenly distributed; Molten steel adopts the omnidistance argon for protecting pouring of the low overheat of 20 DEG C to become continuous casting square billet, continuous casting square billet is sent into burial pit slow cooling more than 48 hours, goes out hole; Continuous casting square billet is heated to 1250 DEG C, is incubated 5 hours, comes out of the stove; Open rolling in the temperature range of 1100 ~ 1150 DEG C after high-pressure water descaling, rolls into round steel bar; Burial pit slow cooling is entered after rolling bar completes; 165.3*88.9mm drill pipe sub materials in the tube are processed into through die forging after bar material baiting after slow cooling, then sending into pit furnace carries out modified, modifiedly comprise Quench and temper, quenching temperature 870 DEG C, at stove 240min, uses quenching bath shrend, tempering Heating temperature is 580 DEG C, at stove 210min, after coming out of the stove, water-cooled is to room temperature, obtains and uses modified round steel.
The smelting of this embodiment round steel and rolling technology substantially identical with embodiment 1, essential difference is that specification is less, composition adopt 4137, stocking is through blanking die heat treatment after forging.From following table, on the basis that intensity is suitable, the present embodiment product unit elongation, relative reduction in area, normal temperature impact and low-temperature impact toughness higher, for the manufacture of the tough drill section of 120KSI grade high-strength.This round steel contrasts in table 3 with the mechanical property with grade of steel steel.
The mechanical property of the modified round steel of the high tough middle carbon of 120KSI grade of steel in table 3 embodiment 3
Claims (6)
1. the modified round steel of the high tough middle carbon of 120KSI grade of steel, it is characterized in that: the chemical composition of this round steel is C:0.35 ~ 0.50% by mass percentage, Si:0.15 ~ 0.40%, Mn:0.60 ~ 1.30%, P :≤0.015%, S :≤0.040%, Cr:0.75 ~ 1.30%, Mo:0.15 ~ 0.35%, Ni :≤0.25%, Cu :≤0.25%, Alt:0.015-0.040%, V :≤0.10%, Nb :≤0.10%, Ti :≤0.05%, N :≤0.008%, B :≤0.0010%, surplus is Fe and inevitable impurity element, wherein V, when the content of Nb is different≤0.010%.
2. the modified round steel of the high tough middle carbon of 120KSI grade of steel according to claim 1, is characterized in that: the interpolation array mode of described V, Nb, Ti: Nb, or V, or Ti, Nb, or Nb, V, or Ti, Nb, V.
3. manufacture a method for the modified round steel of the high tough middle carbon of 120KSI grade of steel as claimed in claim 1, it is characterized in that: processing step is as follows:
Raw materials for metallurgy successively through KR hot metal pretreatment, converter smelting or electrosmelting, LF refining, RH is degassed or VD is degassed produces molten steel, at RH, the degassed or degassed broken sky of VD is afterwards by feeding silicon-calcium wire or calcium iron wire carries out Calcium treatment; Molten steel adopts the omnidistance argon for protecting pouring of the low overheat of 15 ~ 40 DEG C to become continuous cast round billets or square billet, and continuously cast bloom send through 300 ~ 600 DEG C of temperature or enters burial pit slow cooling more than 48 hours, goes out hole; Continuously cast bloom is heated to 1200 ~ 1250 DEG C, is incubated 5 ~ 15 hours, comes out of the stove; Open rolling in the temperature range of 1100 ~ 1150 DEG C after high-pressure water descaling, rolls into round steel bar; Burial pit slow cooling is entered after rolling bar completes; Modifier treatment is directly carried out to the bar after slow cooling and obtains drilling tool modified round steel, or the bar after slow cooling is first annealed and holes, carry out modified to the non-solid bar that boring obtains afterwards, or adopt die forging mode first to make half-finished parts to carry out modified again.
4. the manufacture method of the modified round steel of the high tough middle carbon of 120KSI grade of steel according to claim 3, it is characterized in that: described hardening and tempering process comprises Quench and temper, quenching temperature is 840 ~ 900 DEG C, and time inside furnace is 180 ~ 600min, uses quench rings shrend; Tempering Heating temperature is 550 ~ 650 DEG C, and time inside furnace is 240 ~ 600min, and after coming out of the stove, air cooling or water-cooled are to room temperature.
5. the manufacture method of the modified round steel of the high tough middle carbon of 120KSI grade of steel according to claim 4, is characterized in that: described Quench and temper technique is carried out in roller bottom type continuous oven.
6. the manufacture method of the modified round steel of the high tough middle carbon of 120KSI grade of steel according to claim 3, is characterized in that: described annealing process be by slow cooling after bar be heated to 650 ~ 720 DEG C, soaking time 5 ~ 15 hours, air cooling after stove is chilled to 450 ~ 550 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510425821.4A CN104975235A (en) | 2015-07-20 | 2015-07-20 | High-toughness medium-carbon quenched and tempered round steel of grade 120 KSI and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510425821.4A CN104975235A (en) | 2015-07-20 | 2015-07-20 | High-toughness medium-carbon quenched and tempered round steel of grade 120 KSI and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104975235A true CN104975235A (en) | 2015-10-14 |
Family
ID=54272195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510425821.4A Pending CN104975235A (en) | 2015-07-20 | 2015-07-20 | High-toughness medium-carbon quenched and tempered round steel of grade 120 KSI and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104975235A (en) |
Cited By (32)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105969963A (en) * | 2016-05-27 | 2016-09-28 | 舞阳钢铁有限责任公司 | Production method of alloy structural steel plate for lifting equipment rail |
| CN106011694A (en) * | 2016-07-11 | 2016-10-12 | 曾冰冰 | Molybdenum-rhodium-based alloy steel material and application of molybdenum-rhodium-based alloy steel material in drilling drill stem |
| CN106048415A (en) * | 2016-07-06 | 2016-10-26 | 山东钢铁股份有限公司 | Ni micro-alloyed steel for petroleum drill collar and preparation method thereof |
| CN106282785A (en) * | 2016-10-27 | 2017-01-04 | 马钢(集团)控股有限公司 | A kind of niobium-titanium-boron microalloy fossil oil drill string crossover coupling steel |
| CN106435362A (en) * | 2016-10-27 | 2017-02-22 | 马钢(集团)控股有限公司 | Structural alloy steel for petroleum drilling tool and application thereof |
| CN106498305A (en) * | 2016-10-27 | 2017-03-15 | 马钢(集团)控股有限公司 | A kind of structural alloy steel for manufacturing big specification oil drilling tools |
| CN106521316A (en) * | 2016-11-15 | 2017-03-22 | 江阴兴澄特种钢铁有限公司 | High-hardenability medium-carbon low-alloy round steel for fastener and manufacturing method of high-hardenability medium-carbon low-alloy round steel |
| CN106591680A (en) * | 2016-11-09 | 2017-04-26 | 江阴兴澄特种钢铁有限公司 | Technology for producing LS-CrNiMo30C steel forging for subsea oil production wellhead device through continuous casting billet |
| CN107177797A (en) * | 2017-04-24 | 2017-09-19 | 江阴兴澄特种钢铁有限公司 | The oil gas field anti-corrosion drilling tool steel of 130KSI, 135KSI rank and its manufacture method |
| CN107177804A (en) * | 2017-04-07 | 2017-09-19 | 江阴兴澄特种钢铁有限公司 | A kind of high tough quenched round steel of Cutting free and its manufacture method |
| CN107815615A (en) * | 2017-09-28 | 2018-03-20 | 山西风雷钻具有限公司 | Low-temperature high impact drill collar |
| CN107964625A (en) * | 2017-11-09 | 2018-04-27 | 石家庄钢铁有限责任公司 | A kind of big specification pallet fork round steel of low-temperature impact-resistant toughness and its production method |
| CN109082593A (en) * | 2018-08-30 | 2018-12-25 | 河南中原特钢装备制造有限公司 | A kind of tough pull rod steel and its quenching-and-tempering process having both |
| CN109097665A (en) * | 2018-09-28 | 2018-12-28 | 邢台钢铁有限责任公司 | The smelting process of high-strength weather-resistant bolt steel |
| CN109628835A (en) * | 2018-12-31 | 2019-04-16 | 钢铁研究总院 | One kind can cold roll forming high performance ballistic steel plate and its manufacturing process |
| CN110284062A (en) * | 2019-06-29 | 2019-09-27 | 江阴兴澄特种钢铁有限公司 | It is a kind of with high-intensitive, the major diameter round steel of high tenacity and its manufacturing method |
| CN110846567A (en) * | 2019-10-15 | 2020-02-28 | 石家庄钢铁有限责任公司 | High-strength extremely-cold-environment-impact-resistant bolt steel and production method thereof |
| CN110923545A (en) * | 2019-12-09 | 2020-03-27 | 马鞍山钢铁股份有限公司 | High-weather-resistance cold forging steel for 12.9-grade fastener and production method thereof |
| CN111074150A (en) * | 2019-12-18 | 2020-04-28 | 山东钢铁股份有限公司 | High-strength high-hardenability corrosion-resistant drill bit steel and preparation method thereof |
| CN111961959A (en) * | 2020-07-16 | 2020-11-20 | 中国石油天然气集团有限公司 | Medium-manganese low-carbon martensitic steel, ultra-deep well drilling rig hoisting ring and preparation method thereof |
| CN112048669A (en) * | 2020-08-28 | 2020-12-08 | 南京钢铁股份有限公司 | High-strength and high-toughness steel for drill pipe joint and preparation method thereof |
| CN113025878A (en) * | 2021-01-29 | 2021-06-25 | 江阴兴澄特种钢铁有限公司 | Quenching and tempering round steel for oil-well low-alloy well completion tool and manufacturing method thereof |
| CN113564457A (en) * | 2021-06-25 | 2021-10-29 | 江苏沙钢集团有限公司 | Tempered and pre-hardened plastic die steel plate and preparation method thereof |
| CN113584390A (en) * | 2021-08-03 | 2021-11-02 | 宝武杰富意特殊钢有限公司 | Round steel for high-strength bolt and preparation method thereof |
| CN113699448A (en) * | 2021-08-27 | 2021-11-26 | 中冶陕压重工设备有限公司 | Low-alloy structural steel SY41CrMnMoNbVTi and preparation method thereof |
| CN113737094A (en) * | 2021-08-30 | 2021-12-03 | 山西风雷钻具有限公司 | Machining process of high-performance adapter for drill string |
| CN114086054A (en) * | 2020-08-24 | 2022-02-25 | 宝山钢铁股份有限公司 | High-hardenability quenched and tempered steel, round steel and manufacturing method thereof |
| CN114737035A (en) * | 2022-04-25 | 2022-07-12 | 武钢集团襄阳重型装备材料有限公司 | Method for improving hardness uniformity of hot work die steel 56NiCrMoV7 |
| CN114807558A (en) * | 2022-03-17 | 2022-07-29 | 江阴兴澄特种钢铁有限公司 | Production method of EX50V round steel for mine drill bit |
| CN114855084A (en) * | 2022-04-29 | 2022-08-05 | 南京钢铁股份有限公司 | Hot-rolled round steel for 120ksi steel grade high-strength high-toughness high-grade sulfur-resistant drill pipe joint and preparation method thereof |
| CN116024499A (en) * | 2022-12-28 | 2023-04-28 | 燕山大学 | Steel for 10.9-grade bolt resistant to hydrogen-induced delayed fracture and preparation method of 10.9-grade bolt |
| CN116083816A (en) * | 2023-01-09 | 2023-05-09 | 江苏沙钢集团淮钢特钢股份有限公司 | Steel for high-hardenability oversized petroleum equipment and production process thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003166037A (en) * | 2001-11-28 | 2003-06-13 | Japan Marine Sci & Technol Center | Drill pipe and manufacturing method therefor |
| CN1690241A (en) * | 2004-04-28 | 2005-11-02 | 宝山钢铁股份有限公司 | High-strength drilling rod for petroleum and method for making same |
| CN101275207A (en) * | 2007-03-27 | 2008-10-01 | 宝山钢铁股份有限公司 | H2S-corrosion-resistant tool joint for petroleum drill pipe and hot treatment method thereof |
| CN104532149A (en) * | 2014-12-22 | 2015-04-22 | 江阴兴澄特种钢铁有限公司 | Round steel with high strength and toughness and hydrogen sulfide stress corrosion resistance for drilling tool and manufacturing method of round steel |
-
2015
- 2015-07-20 CN CN201510425821.4A patent/CN104975235A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003166037A (en) * | 2001-11-28 | 2003-06-13 | Japan Marine Sci & Technol Center | Drill pipe and manufacturing method therefor |
| CN1690241A (en) * | 2004-04-28 | 2005-11-02 | 宝山钢铁股份有限公司 | High-strength drilling rod for petroleum and method for making same |
| CN101275207A (en) * | 2007-03-27 | 2008-10-01 | 宝山钢铁股份有限公司 | H2S-corrosion-resistant tool joint for petroleum drill pipe and hot treatment method thereof |
| CN104532149A (en) * | 2014-12-22 | 2015-04-22 | 江阴兴澄特种钢铁有限公司 | Round steel with high strength and toughness and hydrogen sulfide stress corrosion resistance for drilling tool and manufacturing method of round steel |
Cited By (45)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105969963A (en) * | 2016-05-27 | 2016-09-28 | 舞阳钢铁有限责任公司 | Production method of alloy structural steel plate for lifting equipment rail |
| CN106048415A (en) * | 2016-07-06 | 2016-10-26 | 山东钢铁股份有限公司 | Ni micro-alloyed steel for petroleum drill collar and preparation method thereof |
| CN106048415B (en) * | 2016-07-06 | 2018-05-22 | 山东钢铁股份有限公司 | A kind of Ni microalloyings stone oil drill collar steel and preparation method thereof |
| CN106011694A (en) * | 2016-07-11 | 2016-10-12 | 曾冰冰 | Molybdenum-rhodium-based alloy steel material and application of molybdenum-rhodium-based alloy steel material in drilling drill stem |
| CN106282785A (en) * | 2016-10-27 | 2017-01-04 | 马钢(集团)控股有限公司 | A kind of niobium-titanium-boron microalloy fossil oil drill string crossover coupling steel |
| CN106435362A (en) * | 2016-10-27 | 2017-02-22 | 马钢(集团)控股有限公司 | Structural alloy steel for petroleum drilling tool and application thereof |
| CN106498305A (en) * | 2016-10-27 | 2017-03-15 | 马钢(集团)控股有限公司 | A kind of structural alloy steel for manufacturing big specification oil drilling tools |
| WO2018086394A1 (en) * | 2016-11-09 | 2018-05-17 | 江阴兴澄特种钢铁有限公司 | Process for producing ls-crnimo30c steel forging using continuous casting billet for subsea oil production wellhead device |
| CN106591680A (en) * | 2016-11-09 | 2017-04-26 | 江阴兴澄特种钢铁有限公司 | Technology for producing LS-CrNiMo30C steel forging for subsea oil production wellhead device through continuous casting billet |
| CN106521316A (en) * | 2016-11-15 | 2017-03-22 | 江阴兴澄特种钢铁有限公司 | High-hardenability medium-carbon low-alloy round steel for fastener and manufacturing method of high-hardenability medium-carbon low-alloy round steel |
| WO2018090682A1 (en) * | 2016-11-15 | 2018-05-24 | 江阴兴澄特种钢铁有限公司 | High hardenability, medium carbon, low alloy round steel for fasteners and manufacturing method therefor |
| EP3505652A4 (en) * | 2016-11-15 | 2019-07-31 | Jiangyin Xing Cheng Special Steel Works Co., Ltd | High hardenability, medium carbon, low alloy round steel for fasteners and manufacturing method therefor |
| CN106521316B (en) * | 2016-11-15 | 2018-08-07 | 江阴兴澄特种钢铁有限公司 | Carbon and low-alloy round steel and its manufacturing method in a kind of fastener high-hardenability |
| CN107177804A (en) * | 2017-04-07 | 2017-09-19 | 江阴兴澄特种钢铁有限公司 | A kind of high tough quenched round steel of Cutting free and its manufacture method |
| CN107177797A (en) * | 2017-04-24 | 2017-09-19 | 江阴兴澄特种钢铁有限公司 | The oil gas field anti-corrosion drilling tool steel of 130KSI, 135KSI rank and its manufacture method |
| CN107177797B (en) * | 2017-04-24 | 2019-10-11 | 江阴兴澄特种钢铁有限公司 | The oil gas field anti-corrosion drilling tool steel of 130KSI, 135KSI rank and its manufacturing method |
| CN107815615A (en) * | 2017-09-28 | 2018-03-20 | 山西风雷钻具有限公司 | Low-temperature high impact drill collar |
| CN107964625A (en) * | 2017-11-09 | 2018-04-27 | 石家庄钢铁有限责任公司 | A kind of big specification pallet fork round steel of low-temperature impact-resistant toughness and its production method |
| CN109082593A (en) * | 2018-08-30 | 2018-12-25 | 河南中原特钢装备制造有限公司 | A kind of tough pull rod steel and its quenching-and-tempering process having both |
| CN109097665A (en) * | 2018-09-28 | 2018-12-28 | 邢台钢铁有限责任公司 | The smelting process of high-strength weather-resistant bolt steel |
| CN109628835A (en) * | 2018-12-31 | 2019-04-16 | 钢铁研究总院 | One kind can cold roll forming high performance ballistic steel plate and its manufacturing process |
| CN109628835B (en) * | 2018-12-31 | 2020-07-24 | 钢铁研究总院 | High-performance bulletproof steel plate capable of being formed through cold bending and manufacturing process thereof |
| CN110284062A (en) * | 2019-06-29 | 2019-09-27 | 江阴兴澄特种钢铁有限公司 | It is a kind of with high-intensitive, the major diameter round steel of high tenacity and its manufacturing method |
| CN110284062B (en) * | 2019-06-29 | 2022-01-14 | 江阴兴澄特种钢铁有限公司 | Large-diameter round steel with high strength and high toughness and manufacturing method thereof |
| CN110846567A (en) * | 2019-10-15 | 2020-02-28 | 石家庄钢铁有限责任公司 | High-strength extremely-cold-environment-impact-resistant bolt steel and production method thereof |
| CN110846567B (en) * | 2019-10-15 | 2021-08-13 | 石家庄钢铁有限责任公司 | High-strength extremely-cold-environment-impact-resistant bolt steel and production method thereof |
| CN110923545A (en) * | 2019-12-09 | 2020-03-27 | 马鞍山钢铁股份有限公司 | High-weather-resistance cold forging steel for 12.9-grade fastener and production method thereof |
| CN110923545B (en) * | 2019-12-09 | 2021-06-22 | 马鞍山钢铁股份有限公司 | High-weather-resistance cold forging steel for 12.9-grade fastener and production method thereof |
| CN111074150A (en) * | 2019-12-18 | 2020-04-28 | 山东钢铁股份有限公司 | High-strength high-hardenability corrosion-resistant drill bit steel and preparation method thereof |
| CN111961959A (en) * | 2020-07-16 | 2020-11-20 | 中国石油天然气集团有限公司 | Medium-manganese low-carbon martensitic steel, ultra-deep well drilling rig hoisting ring and preparation method thereof |
| CN114086054A (en) * | 2020-08-24 | 2022-02-25 | 宝山钢铁股份有限公司 | High-hardenability quenched and tempered steel, round steel and manufacturing method thereof |
| CN112048669A (en) * | 2020-08-28 | 2020-12-08 | 南京钢铁股份有限公司 | High-strength and high-toughness steel for drill pipe joint and preparation method thereof |
| CN113025878A (en) * | 2021-01-29 | 2021-06-25 | 江阴兴澄特种钢铁有限公司 | Quenching and tempering round steel for oil-well low-alloy well completion tool and manufacturing method thereof |
| CN113025878B (en) * | 2021-01-29 | 2022-07-29 | 江阴兴澄特种钢铁有限公司 | Quenching and tempering round steel for oil-well low-alloy well completion tool and manufacturing method thereof |
| CN113564457A (en) * | 2021-06-25 | 2021-10-29 | 江苏沙钢集团有限公司 | Tempered and pre-hardened plastic die steel plate and preparation method thereof |
| CN113584390A (en) * | 2021-08-03 | 2021-11-02 | 宝武杰富意特殊钢有限公司 | Round steel for high-strength bolt and preparation method thereof |
| CN113699448A (en) * | 2021-08-27 | 2021-11-26 | 中冶陕压重工设备有限公司 | Low-alloy structural steel SY41CrMnMoNbVTi and preparation method thereof |
| CN113737094A (en) * | 2021-08-30 | 2021-12-03 | 山西风雷钻具有限公司 | Machining process of high-performance adapter for drill string |
| CN114807558A (en) * | 2022-03-17 | 2022-07-29 | 江阴兴澄特种钢铁有限公司 | Production method of EX50V round steel for mine drill bit |
| CN114807558B (en) * | 2022-03-17 | 2023-09-26 | 江阴兴澄特种钢铁有限公司 | Production method of EX50V round steel for mine drill bit |
| CN114737035A (en) * | 2022-04-25 | 2022-07-12 | 武钢集团襄阳重型装备材料有限公司 | Method for improving hardness uniformity of hot work die steel 56NiCrMoV7 |
| WO2023206818A1 (en) * | 2022-04-29 | 2023-11-02 | 南京钢铁股份有限公司 | 120ksi-steel-grade high-strength high-toughness high-hydrogen sulfide-resistance hot-rolled steel round bar used for drill pipe joint, and preparation method therefor |
| CN114855084A (en) * | 2022-04-29 | 2022-08-05 | 南京钢铁股份有限公司 | Hot-rolled round steel for 120ksi steel grade high-strength high-toughness high-grade sulfur-resistant drill pipe joint and preparation method thereof |
| CN116024499A (en) * | 2022-12-28 | 2023-04-28 | 燕山大学 | Steel for 10.9-grade bolt resistant to hydrogen-induced delayed fracture and preparation method of 10.9-grade bolt |
| CN116083816A (en) * | 2023-01-09 | 2023-05-09 | 江苏沙钢集团淮钢特钢股份有限公司 | Steel for high-hardenability oversized petroleum equipment and production process thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104975235A (en) | High-toughness medium-carbon quenched and tempered round steel of grade 120 KSI and manufacturing method thereof | |
| CN104532149B (en) | A kind of high tough, anti-H 2 S stress corrosion drilling tool round steel and manufacture method thereof | |
| WO2018090682A1 (en) | High hardenability, medium carbon, low alloy round steel for fasteners and manufacturing method therefor | |
| JP6574307B2 (en) | High toughness seamless steel pipe and manufacturing method thereof | |
| CN103266287B (en) | Carbon ferritic in one-pearlite type non-hardened and tempered steel and manufacture method thereof | |
| US10851432B2 (en) | Ultra-high strength and ultra-high toughness casing steel, oil casing, and manufacturing method thereof | |
| CN103725986B (en) | The special thick rack steel plate of the high tenacity F level used under low temperature and manufacture method thereof | |
| CN103540838B (en) | A kind of Steel plate for low-temperature vessel and production method | |
| CN104264064B (en) | A kind of special think gauge Q690 high strength structure plate and manufacture method thereof | |
| CN103695803B (en) | The heavy thickness rack steel that low-carbon-equivalent low-temperature uses and manufacture method thereof | |
| CN105525226A (en) | Martensitic stainless steel wire rod and production method thereof | |
| CN104532143A (en) | Mining large-specification and high-strength chain steel and preparation method thereof | |
| CN110284062B (en) | Large-diameter round steel with high strength and high toughness and manufacturing method thereof | |
| CN109023119A (en) | A kind of abrasion-resistant stee and its manufacturing method with excellent plasticity and toughness | |
| CN101333624B (en) | Anti-H2S stress corrosion high pressure resistant forgings and method for manufacturing same | |
| CN101353770A (en) | High strength stainless gear steel and preparation thereof | |
| CN101768698A (en) | Low cost yield strength 700MPA level non-tempering processing high strength steel plate and manufacturing method thereof | |
| CN102477518A (en) | Steel used for steam turbine blades and manufacturing method thereof | |
| CN107130172B (en) | 400HBW grades of Brinell hardness whole constrictive type high tenacity easily weld special thick wear-resisting steel plate and its manufacturing method | |
| CN109280743B (en) | High-strength wear-resistant steel for roller and production method thereof | |
| CN102691005A (en) | Low alloy die steel | |
| CN102424936A (en) | Low temperature impact resistance allay structure steel and manufacture method thereof | |
| CN107881417A (en) | A kind of low yield strength ratio martensite ferrite austenite multi-phase wear-resistant steel plate and its manufacture method | |
| CN106636943A (en) | Thin-specification high-strength pipeline steel with ductility A 50.8 of not less than 48% and production method thereof | |
| CN108277432A (en) | A kind of cutlery martensite containing nitrogen stainless steel and its manufacturing 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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151014 |