CN115094336A - Steel for high-temperature-resistant hot-insert alloy tooth drill bit and heat treatment processing technology thereof - Google Patents
Steel for high-temperature-resistant hot-insert alloy tooth drill bit and heat treatment processing technology thereof Download PDFInfo
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- CN115094336A CN115094336A CN202210867511.8A CN202210867511A CN115094336A CN 115094336 A CN115094336 A CN 115094336A CN 202210867511 A CN202210867511 A CN 202210867511A CN 115094336 A CN115094336 A CN 115094336A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 58
- 239000010959 steel Substances 0.000 title claims abstract description 58
- 238000010438 heat treatment Methods 0.000 title claims abstract description 36
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 33
- 239000000956 alloy Substances 0.000 title claims abstract description 33
- 238000005496 tempering Methods 0.000 claims abstract description 22
- 238000001816 cooling Methods 0.000 claims abstract description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 11
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 10
- 229910001563 bainite Inorganic materials 0.000 claims abstract description 9
- 229910052742 iron Inorganic materials 0.000 claims abstract description 9
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 9
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 9
- 229910000734 martensite Inorganic materials 0.000 claims abstract description 7
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 6
- 238000005242 forging Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 238000005096 rolling process Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 3
- 238000010791 quenching Methods 0.000 abstract description 10
- 230000000171 quenching effect Effects 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 229910003296 Ni-Mo Inorganic materials 0.000 abstract description 4
- 229910006639 Si—Mn Inorganic materials 0.000 abstract description 4
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 2
- 230000000052 comparative effect Effects 0.000 description 8
- 229910000851 Alloy steel Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000006698 induction Effects 0.000 description 4
- 238000005728 strengthening Methods 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000341 volatile oil Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D11/00—Process control or regulation for heat treatments
- C21D11/005—Process control or regulation for heat treatments for cooling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/002—Heat treatment of ferrous alloys containing Cr
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/008—Heat treatment of ferrous alloys containing Si
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/002—Bainite
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/008—Martensite
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/009—Pearlite
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention is suitable for the technical field of steel for hot-insert alloy tooth drill bits, and provides steel for a high-temperature-resistant hot-insert alloy tooth drill bit and a heat treatment processing technology thereof, wherein the steel comprises the following components in percentage by weight: c: 0.4-0.65%, Cr: 0.8-2.0%, Si: 0.7-1.3%, Mn 1.7-2.5%, Mo: 0.2-0.6%, V: 0.04-0.2 percent of steel, and the balance of iron, the steel for the high-temperature resistant hot-insert alloy tooth drill bit and the heat treatment processing technology thereof provided by the invention use cheap alloy elements such as Si-Mn to replace Cr-Ni-Mo, and use Si-Mn to keep the tempering stability (tempering strength and tempering hardness) so as to meet the use requirements, and the cost is low; the bainite and martensite structures can be obtained by heating and air cooling at the temperature of 880 plus 900 ℃, and compared with the medium carbon Cr-Ni-Mo series steel used for manufacturing the heat-embedded alloy tooth drill bit in the prior art which needs quenching treatment, the medium carbon Cr-Ni-Mo series steel has the advantages of small heat treatment deformation, no environmental pollution and the like; the steel for the hot-insert alloy tooth drill bit is tempered at 420-580 ℃, so that the range of temper brittleness is avoided, and the strength of the steel for the hot-insert alloy tooth drill bit is ensured.
Description
Technical Field
The invention relates to the technical field of steel for a hot-insert alloy tooth drill bit, in particular to high-temperature-resistant steel for the hot-insert alloy tooth drill bit and a heat treatment processing technology thereof.
Background
Most of the prior art for manufacturing the hot-insert alloy tooth drill bit is medium-carbon Cr-Ni-Mo series steel, the addition of alloy elements such as Cr, Ni and the like ensures that the hardenability is better and the strength and the toughness of ferrite are improved, the addition of carbide forming elements such as Mo, Cr and the like can prevent austenite grains from growing large, improve the tempering stability of the steel, have certain impact resistance and fracture toughness in use, and high fatigue strength meets the requirements of an annular track on material performance.
However, the high Ni content in Cr-Ni-Mo steels results in high manufacturing cost and greater pollution by conventional quenching heat treatment processes.
Disclosure of Invention
The invention aims to provide steel for a high-temperature-resistant hot-insert alloy tooth drill bit and a heat treatment processing technology thereof, and aims to solve the problems that in the prior art, the manufacturing cost is high due to the high Ni content in Cr-Ni-Mo series steel, and the pollution is large due to the adoption of a traditional quenching heat treatment technology.
In order to achieve the purpose, the invention provides the following technical scheme: the steel for the high-temperature-resistant hot-insert alloy tooth drill bit comprises the following components in percentage by weight:
c: 0.4-0.65%, Cr: 0.8-2.0%, Si: 0.7-1.3%, Mn 1.7-2.5%, Mo: 0.2-0.6%, V: 0.04-0.2% and the balance of iron.
A heat treatment processing technology of steel for a high-temperature-resistant hot-insert alloy tooth drill bit comprises the following steps:
s1, forging and rolling the steel ingot blank into a material, heating at 880-900 ℃ and then cooling in air: obtaining a medium-carbon bainite structure at a cooling speed of 1-25 ℃/min, and obtaining a bainite and martensite structure at a cooling speed of 25-200 ℃/min;
s2, tempering to obtain tempered troostite structure.
Preferably, the forging temperature of the steel ingot blank in the S1 is 1100 ℃.
Preferably, the tempering temperature in the S2 is 420-580 ℃.
The invention has at least the following beneficial effects:
(1) according to the steel for the high-temperature-resistant hot-insert alloy tooth drill bit and the heat treatment processing technology thereof, provided by the invention, cheap alloy elements such as Si-Mn and the like are used for replacing Cr-Ni-Mo, and the Si-Mn is used for keeping the tempering stability (tempering strength and tempering hardness) to meet the use requirement, so that the cost is low;
(2) according to the steel for the high-temperature-resistant hot-insert alloy tooth drill bit and the heat treatment processing technology thereof, bainite and martensite structures can be obtained through heating and air cooling at the temperature of 880 plus 900 ℃, and compared with the medium-carbon Cr-Ni-Mo steel used for manufacturing the hot-insert alloy tooth drill bit in the prior art, the steel needs quenching treatment, and has the advantages of small heat treatment deformation, no environmental pollution and the like;
(3) the steel for the high-temperature-resistant hot-insert alloy tooth drill bit and the heat treatment processing technology thereof provided by the invention have the advantages that the steel for the hot-insert alloy tooth drill bit is tempered at 420-580 ℃, the range of temper brittleness is avoided, and the strength of the steel for the hot-insert alloy tooth drill bit is ensured.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Example 1
The high temperature resistant steel for the alloy-embedded tooth drill bit is smelted in a vacuum medium frequency induction furnace, deoxidized, refined and cast into a steel ingot blank, and comprises the following components in percentage by weight:
c: 0.45%, Cr: 0.97%, Si: 1.05%, Mn: 2.092%, Mo: 0.35%, V: 0.08 percent and the balance of iron.
A heat treatment processing technology of steel for a high-temperature-resistant hot-insert alloy tooth drill bit comprises the following steps:
s1, forging and rolling the steel ingot blank into a material at 1100 ℃, heating at 880 ℃, then air-cooling, and obtaining a bainite and martensite structure at a cooling rate of 25 ℃/min;
s2, tempering at 500 ℃ to obtain a tempered troostite structure, which has excellent obdurability, no internal oxidation defect through detection, HRC46, and no first-class tempering brittleness.
Example 2
The high temperature resistant steel for the alloy-embedded tooth drill bit is smelted in a vacuum medium frequency induction furnace, deoxidized, refined and cast into a steel ingot blank, and comprises the following components in percentage by weight:
c: 0.64%, Cr: 1.20%, Si: 1.20%, Mn: 1.802%, Mo: 0.23%, V: 0.12% and the balance iron.
A heat treatment processing technology of steel for a high-temperature-resistant hot-insert alloy tooth drill bit comprises the following steps:
s1, forging and rolling the steel ingot blank into a material at 1100 ℃, heating at 860 ℃ and then cooling in air, wherein the bainite structure is obtained at a cooling rate of 22 ℃/min;
s2, tempering at 520 ℃ to obtain a tempered troostite structure with excellent obdurability, and detecting HRC44 to avoid the first type of tempered brittleness.
Example 3
The high temperature resistant steel for the alloy-embedded tooth drill bit is smelted in a vacuum medium frequency induction furnace, deoxidized, refined and cast into a steel ingot blank, and comprises the following components in percentage by weight:
c: 0.40%, Cr: 1.97%, Si: 0.7%, Mn: 2.45%, Mo: 0.32%, V: 0.18 percent and the balance of iron.
A heat treatment processing technology of steel for a high-temperature-resistant hot-insert alloy tooth drill bit comprises the following steps:
s1, forging and rolling the steel ingot blank into a material at 1100 ℃, heating at 900 ℃, air-cooling, and obtaining a martensite structure at a cooling speed of 100 ℃/min;
s2, tempering at 580 ℃ to obtain a tempered troostite structure with excellent obdurability, and the first type of tempered brittleness is not generated by detecting HRC 43.
Example 4
The steel for the high-temperature-resistant hot-embedded alloy tooth drill bit is smelted by adopting a vacuum medium-frequency induction furnace, is deoxidized, refined and cast into a steel ingot blank, and comprises the following components in percentage by weight:
c: 0.65%, Cr: 1.30%, Si: 1.07%, Mn: 2.01%, Mo: 0.40%, V: 0.20% and the balance of iron.
A heat treatment processing technology of steel for a high-temperature-resistant hot-insert alloy tooth drill bit comprises the following steps:
s1, forging and rolling the steel ingot blank into a material at 1100 ℃, heating at 860 ℃ and then cooling in air, wherein the bainite and martensite structure is obtained at a cooling rate of 30 ℃/min;
s2, tempering at 480 ℃ to obtain a tempered troostite structure with excellent obdurability, and detecting HRC48 to avoid the first type of tempered brittleness.
The tempering temperature in the embodiments 1-4 is 480-580 ℃, and beyond the range, the tempering brittleness temperature range can be entered; the temperature is lower than 480 ℃, and the interference generated by thermal expansion is insufficient, so that the clamping force of the cog is insufficient; above 580 c, this results in a decrease in the hardness of the material of the shank, as well as in a lack of grip by the cogs and a decrease in the wear resistance.
The prior steel for the hot-embedded drill bit is Cr-Ni-Mo series, and the steel number mainly comprises the following two types:
comparative example 1
The 45CrNiMoV alloy steel comprises the following components in percentage by weight:
c: 0.42-0.49%, Cr: 0.8-1.10%, Ni: 1.30-1.90%, Si: 0.17-0.37%, Mn 0.5-0.8%, Mo: 0.2-0.3%, V: 0.10-0.20%, and the balance of iron.
The heat treatment processing technology of the 45CrNiMoV alloy steel comprises the following steps: oil quenching at 860 deg.C, tempering at 460 deg.C for 2 hr, and oil cooling.
Comparative example 2
The Q45NiCr1Mo1VA alloy steel comprises the following components in percentage by weight:
c: 0.42-0.48%, Cr: 0.9-1.20%, Ni: 0.40-0.70%, Si: 0.15-0.30%, Mn 0.6-0.9%, Mo: 0.90-1.10%, V: 0.05-0.15% and the balance of iron.
The heat treatment processing technology of the Q45NiCr1Mo1VA alloy steel comprises the steps of quenching and heating, and then tempering.
Compared with the comparative example 1, the examples 1 to 4 are greatly added with Mn/Si and have no Ni, and although the Cr/Mo/V content is equivalent to 45CrNiMoVA, the steel systems are completely different; the heat treatment processing technology of the examples 1-4 adopts air cooling, the 45CrNiMoVA in the comparative example 1 adopts quenching (oil cooling), and in the implementation of the latter technology, the deformation of a workpiece (a drill bit) is large, a large amount of volatile oil fume is generated, and a quenching tank leaks and pollutes greatly.
Compared with the comparative example 1, the comparative example 2 reduces the Ni content and improves the Mo content, the cost of the steel is lower than 45CrNiMoVA, but still is greatly higher than that of the steel of the examples 1-4, and the steel is mainly used for manufacturing the hot-insert drill bit in China at present.
Compared with the comparative example 2, the examples 1 to 4 have the advantages that Mn/Si is added, Ni is not contained, the using amount of Mo is greatly reduced, and although the Cr/V content is equivalent, the steel systems are completely different; the heat treatment processing technology of the embodiments 1-4 adopts air cooling, the Q45NiCr1Mo1VA in the comparative example 2 adopts quenching, and a quenching tank leaks and is polluted greatly.
In the prior art, most of carbide forming elements such as high Cr, high Mo and the like precipitate fine carbides during tempering and heating to form a dispersion strengthening effect, and meanwhile, a non-carbide forming element Ni is added to maintain a solid solution strengthening effect so as to ensure the thermal stability (high-temperature hardness) of the alloy; the invention mainly takes non-carbide forming element Si/Mn as main elements, can not precipitate carbide during tempering and heating, mainly keeps the solid solution strengthening effect, and simultaneously keeps the carbide precipitation strengthening effect of Cr to ensure the thermal stability (high-temperature hardness).
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The steel for the high-temperature-resistant hot-insert alloy tooth drill bit is characterized by comprising the following components in percentage by weight:
c: 0.4-0.65%, Cr: 0.8-2.0%, Si: 0.7-1.3%, Mn 1.7-2.5%, Mo: 0.2-0.6%, V: 0.04-0.2% and the balance of iron.
2. The heat treatment process of the steel for the high temperature resistant heat-insert alloy bit according to claim 1, comprising the steps of:
s1, forging and rolling the steel ingot blank into a material, heating at 880-900 ℃ and then cooling in air: obtaining a medium-carbon bainite structure at a cooling rate of 1-25 ℃/min, and obtaining a bainite and martensite structure at a cooling rate of 25-200 ℃/min;
s2, tempering to obtain tempered troostite structure.
3. The heat treatment process of the steel for the high temperature resistant hot-insert alloy bit according to claim 2, wherein: the forging and rolling temperature of the steel ingot blank in the S1 is 1100 ℃.
4. The heat treatment processing technology of the steel for the high temperature resistant heat-embedded alloy dental bit according to claim 2, characterized in that: the tempering temperature in the S2 is 420-580 ℃.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210867511.8A CN115094336A (en) | 2022-07-22 | 2022-07-22 | Steel for high-temperature-resistant hot-insert alloy tooth drill bit and heat treatment processing technology thereof |
| ZA2022/09959A ZA202209959B (en) | 2022-07-22 | 2022-09-07 | A steel for high-temperature resistant and hot embedded alloy teeth bit and its heat treatment technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210867511.8A CN115094336A (en) | 2022-07-22 | 2022-07-22 | Steel for high-temperature-resistant hot-insert alloy tooth drill bit and heat treatment processing technology thereof |
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| Publication Number | Publication Date |
|---|---|
| CN115094336A true CN115094336A (en) | 2022-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210867511.8A Pending CN115094336A (en) | 2022-07-22 | 2022-07-22 | Steel for high-temperature-resistant hot-insert alloy tooth drill bit and heat treatment processing technology thereof |
Country Status (2)
| Country | Link |
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| CN (1) | CN115094336A (en) |
| ZA (1) | ZA202209959B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2829847A1 (en) * | 1978-07-07 | 1980-01-17 | Edelstahl Gmbh & Co Kg Techn B | Steel chisel used in hammers for breaking concrete etc. - made by through hardening and tempering low alloy steel contg. chromium, molybdenum and vanadium |
| JP2001262274A (en) * | 2000-03-22 | 2001-09-26 | Kobe Steel Ltd | High strength steel belt and its producing method |
| CN1385549A (en) * | 2002-01-15 | 2002-12-18 | 江苏省机电研究所 | Intermediate carbon multielement low alloy wear-resistant casting steel |
| JP2005069274A (en) * | 2003-08-28 | 2005-03-17 | Nsk Ltd | Roller bearing |
| CN105695879A (en) * | 2016-04-30 | 2016-06-22 | 贵州惠沣众一机械制造有限公司 | Steel for high-tenacity air cooling drill tool and production method thereof |
| CN105734408A (en) * | 2016-04-30 | 2016-07-06 | 贵州惠沣众一机械制造有限公司 | High-strength toughness carburized and air-cooled steel for tunneling tool and production method thereof |
| CN105803326A (en) * | 2016-04-30 | 2016-07-27 | 贵州惠沣众机械制造有限公司 | High-strength high-toughness air-cooled drill tool steel and production method thereof |
| CN110819894A (en) * | 2019-10-23 | 2020-02-21 | 成都兴锐新材料有限公司 | Novel wear-resistant alloy steel and heat treatment process thereof |
-
2022
- 2022-07-22 CN CN202210867511.8A patent/CN115094336A/en active Pending
- 2022-09-07 ZA ZA2022/09959A patent/ZA202209959B/en unknown
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2829847A1 (en) * | 1978-07-07 | 1980-01-17 | Edelstahl Gmbh & Co Kg Techn B | Steel chisel used in hammers for breaking concrete etc. - made by through hardening and tempering low alloy steel contg. chromium, molybdenum and vanadium |
| JP2001262274A (en) * | 2000-03-22 | 2001-09-26 | Kobe Steel Ltd | High strength steel belt and its producing method |
| CN1385549A (en) * | 2002-01-15 | 2002-12-18 | 江苏省机电研究所 | Intermediate carbon multielement low alloy wear-resistant casting steel |
| JP2005069274A (en) * | 2003-08-28 | 2005-03-17 | Nsk Ltd | Roller bearing |
| CN105695879A (en) * | 2016-04-30 | 2016-06-22 | 贵州惠沣众一机械制造有限公司 | Steel for high-tenacity air cooling drill tool and production method thereof |
| CN105734408A (en) * | 2016-04-30 | 2016-07-06 | 贵州惠沣众一机械制造有限公司 | High-strength toughness carburized and air-cooled steel for tunneling tool and production method thereof |
| CN105803326A (en) * | 2016-04-30 | 2016-07-27 | 贵州惠沣众机械制造有限公司 | High-strength high-toughness air-cooled drill tool steel and production method thereof |
| CN110819894A (en) * | 2019-10-23 | 2020-02-21 | 成都兴锐新材料有限公司 | Novel wear-resistant alloy steel and heat treatment process thereof |
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|---|---|
| ZA202209959B (en) | 2022-09-28 |
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Application publication date: 20220923 |