CN112442626A - Preparation process of cutter of high-speed circular cutting machine - Google Patents
Preparation process of cutter of high-speed circular cutting machine Download PDFInfo
- Publication number
- CN112442626A CN112442626A CN201910828442.8A CN201910828442A CN112442626A CN 112442626 A CN112442626 A CN 112442626A CN 201910828442 A CN201910828442 A CN 201910828442A CN 112442626 A CN112442626 A CN 112442626A
- Authority
- CN
- China
- Prior art keywords
- cutter
- raw materials
- temperature
- mold
- heating
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/006—Making ferrous alloys compositions used for making ferrous alloys
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/22—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for drills; for milling cutters; for machine cutting tools
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
-
- 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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
-
- 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/56—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.7% by weight of carbon
-
- 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
Abstract
The invention relates to the technical field of cutters, in particular to a cutter preparation process of a high-speed circular cutting machine, which comprises the following steps: s1, selecting raw materials; s2, crushing the raw materials, and mixing the crushed raw materials; s3, adding the mixed raw materials into a vacuum reaction furnace for heating and melting; s4, manufacturing a mold according to the size of the cutter, injecting the melt into the mold after the mold is finished, cooling the mold, reducing the temperature to 600-; s5, quenching and tempering the cutter; and S6, after the processing in the step S5 is finished, grinding the two sides of the knife body. The invention has the characteristics of enhancing the strength and the wear resistance of the cutter and being beneficial to prolonging the service life of the cutter.
Description
Technical Field
The invention relates to the technical field of cutters, in particular to a cutter manufacturing process of a high-speed circular cutting machine.
Background
The circle cutting machine is carrying out the during operation, rotates through driving the material to make circle cutting machine's cutter cut into the strip to the material, because the cutter carries out contact friction with the material for a long time, the intensity and the wearability of cutter are relatively poor, cause the cutter easily and appear the circumstances of sword and damage, influence the life of cutter, simultaneously at the in-process of cuting, also influence the shearing effect of cutter easily.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a cutter preparation process of a high-speed circular cutting machine.
In order to achieve the purpose, the invention adopts the following technical scheme:
a cutter preparation process of a high-speed circular cutting machine is designed, and comprises the following steps: the method comprises the following steps:
s1, selecting raw materials, namely 2-3 parts of carbon, 1-2 parts of tungsten, 0.6-0.9 part of zinc, 0.3-0.5 part of copper, 5-8 parts of chromium, 0.2-0.5 part of magnesium, 3-4 parts of manganese, 2-2.5 parts of nickel and 60-70 parts of iron;
s2, crushing the raw materials, and mixing the crushed raw materials;
s3, adding the mixed raw materials into a vacuum reaction furnace for heating and melting, wherein the temperature is 3500 ℃, and stirring the melt in the melting process;
s4, manufacturing a mold according to the size of the cutter, injecting the melt into the mold after the mold is finished, cooling the mold, reducing the temperature to 600-;
s5, quenching and tempering the cutter;
and S6, after the processing in the step S5 is finished, polishing two sides of the cutter body, simultaneously roughly edging the cutter by adopting a machine, then manually and flatly grinding the cutter from the back of the cutter to the blade point by adopting a plane grinding method, and simultaneously ensuring that the single side of the edging angle of the cutter is 30 degrees.
Preferably, before the melt is poured into the mold, the mold needs to be preheated, and the temperature of the mold is preheated to 320-440 ℃.
Preferably, when selecting the raw material, the raw material is required to be subjected to acid cleaning to remove the surface oxide, and the method comprises the following steps:
a1, separately putting raw materials which are easy to oxidize into different pickling baths, and continuously stirring at the temperature of 30-45 ℃ for 30-40 min;
a2, taking out the pickled raw materials, uniformly spreading the pickled raw materials, drying the materials in the sun, and optionally drying the materials by using a blower;
a3, weighing and proportioning according to the specific gravity of the raw materials.
Preferably, the stirring speed is 120r/min when the melt is stirred.
Preferably, when the heating is performed in a vacuum reaction furnace, the method comprises the following steps:
b1, heating the temperature in the heating furnace to 1100-1200 ℃ within 2 hours, and preserving the heat for 20-30 min;
b2, heating the temperature in the heating furnace to 1500-;
b3, controlling the heating furnace to raise at the temperature of 20 ℃ per minute, and preserving the heat for 30-45min when the temperature reaches 3500 ℃.
Preferably, the quenching in step S5 is performed by a step quenching method.
The cutter preparation process of the high-speed circular cutting machine has the beneficial effects that: the addition of the manganese material has the functions of deoxidation, desulfurization and regulation, prevents the formation of grain edge carbide of the cutter, also increases the strength, toughness and hardenability of the cutter, and the addition of the chromium raw material has the functions of oxidation resistance and corrosion resistance, and also improves the strength, hardness and wear resistance.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, 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.
Example 1
A preparation process of a cutter of a high-speed circular cutting machine comprises the following steps: a cutter preparation process of a high-speed circular cutting machine is designed, and comprises the following steps: the method comprises the following steps:
s1, selecting raw materials, namely 2 parts of carbon, 1 part of tungsten, 0.6 part of zinc, 0.3 part of copper, 5 parts of chromium, 0.2 part of magnesium, 3 parts of manganese, 2 parts of nickel and 60 parts of iron, enhancing the strength and the wear resistance of the cutter through the addition of the carbon, the tungsten and the chromium, preventing the abrasion of the blade and the blade curling, and simultaneously, the addition of the manganese material has the functions of deoxidation, desulfurization and regulation, preventing the formation of grain edge carbides of the cutter, and also increasing the strength, the toughness and the hardenability of the cutter;
s2, crushing the raw materials, and mixing the crushed raw materials;
s3, adding the mixed raw materials into a vacuum reaction furnace for heating and melting, wherein the temperature is 3500 ℃, stirring the melt in the melting process, and the stirring speed is 120r/min when the melt is stirred, so that the raw materials can be conveniently and fully melted by crushing and mixing the raw materials during heating;
s4, manufacturing a die according to the size of a cutter, injecting molten liquid into the die after the die is finished, cooling the die, reducing the temperature to 600 ℃, preserving heat for 20-30min, then reducing the temperature to 300 ℃, preserving heat for 10-15min, reducing the temperature to 100 ℃, preserving heat for 6-8min, taking out a forming cutter when the die is cooled to room temperature, preheating the die before the molten liquid is poured into the die, preheating the temperature of the die to 320 ℃, preheating the die, facilitating the quality of cutter forming, improving the hardness of the cutter through graded cooling, and avoiding cracking;
s5, quenching and tempering the cutter, wherein the quenching and tempering are carried out in a graded quenching mode, so that the mechanical property of the cutter is improved;
s6, after the processing in the step S5 is finished, polishing two sides of the knife body, roughly edging the knife by a machine, and then manually and flatly grinding the knife edge from the knife back to the knife edge by a plane grinding method, wherein the single side of the edging angle of the knife is ensured to be 30 degrees, and the single side of the edging angle is 30 degrees, so that the knife is not easy to become blunt, and the knife grinding machine has the advantage of easy grinding.
When selecting raw materials, the raw materials need to be pickled to remove surface oxides, and the method comprises the following steps:
a1, separately putting raw materials which are easy to oxidize into different pickling baths, and continuously stirring at the temperature of 30-45 ℃ for 30-40 min;
a2, taking out the pickled raw materials, uniformly spreading the pickled raw materials, drying the materials in the sun, and optionally drying the materials by using a blower;
a3, weighing and proportioning the raw materials according to the specific gravity of the raw materials, and carrying out acid washing on the raw materials, so as to remove oxides on the surfaces of the raw materials and prevent the oxides from interfering with the balance weight of the raw materials.
When the heating is carried out in a vacuum reaction furnace, the method comprises the following steps:
b1, heating the temperature in the heating furnace to 1100-1200 ℃ within 2 hours, and preserving the heat for 20-30 min;
b2, heating the temperature in the heating furnace to 1500-;
b3, controlling the heating furnace to raise at the temperature of 20 ℃ per minute, and preserving the heat for 30-45min when the temperature reaches 3500 ℃.
Example 2
A preparation process of a cutter of a high-speed circular cutting machine comprises the following steps: a cutter preparation process of a high-speed circular cutting machine is designed, and comprises the following steps: the method comprises the following steps:
s1, selecting raw materials, namely 3 parts of carbon, 2 parts of tungsten, 0.9 part of zinc, 0.5 part of copper, 8 parts of chromium, 0.5 part of magnesium, 4 parts of manganese, 2.5 parts of nickel and 70 parts of iron, enhancing the strength and the wear resistance of the cutter through the carbon, the tungsten and the chromium, preventing the abrasion of the blade and the blade curling, simultaneously, adding the manganese material has the functions of deoxidation, the desulfurization and the regulation to prevent the formation of grain boundary carbides of the cutter, and also increasing the strength, the toughness and the hardenability of the cutter;
s2, crushing the raw materials, and mixing the crushed raw materials;
s3, adding the mixed raw materials into a vacuum reaction furnace for heating and melting, wherein the temperature is 3500 ℃, stirring the melt in the melting process, and the stirring speed is 120r/min when the melt is stirred, so that the raw materials can be conveniently and fully melted by crushing and mixing the raw materials during heating;
s4, manufacturing a die according to the size of a cutter, injecting molten liquid into the die after the die is finished, cooling the die, reducing the temperature to 700 ℃, preserving the heat for 20-30min, then reducing the temperature to 400 ℃, preserving the heat for 10-15min, reducing the temperature to 150 ℃, preserving the heat for 6-8min, taking out a forming cutter when the die is cooled to room temperature, preheating the die before the molten liquid is poured into the die, preheating the temperature of the die to 440 ℃, preheating the die, facilitating the quality of cutter forming, improving the hardness of the cutter through graded cooling, and avoiding cracking;
s5, quenching and tempering the cutter, wherein the quenching and tempering are carried out in a graded quenching mode, so that the mechanical property of the cutter is improved;
s6, after the processing in the step S5 is finished, polishing two sides of the knife body, roughly edging the knife by a machine, and then manually and flatly grinding the knife edge from the knife back to the knife edge by a plane grinding method, wherein the single side of the edging angle of the knife is ensured to be 30 degrees, and the single side of the edging angle is 30 degrees, so that the knife is not easy to become blunt, and the knife grinding machine has the advantage of easy grinding.
When selecting raw materials, the raw materials need to be pickled to remove surface oxides, and the method comprises the following steps:
a1, separately putting raw materials which are easy to oxidize into different pickling baths, and continuously stirring at the temperature of 30-45 ℃ for 30-40 min;
a2, taking out the pickled raw materials, uniformly spreading the pickled raw materials, drying the materials in the sun, and optionally drying the materials by using a blower;
a3, weighing and proportioning the raw materials according to the specific gravity of the raw materials, and carrying out acid washing on the raw materials, so as to remove oxides on the surfaces of the raw materials and prevent the oxides from interfering with the balance weight of the raw materials.
When the heating is carried out in a vacuum reaction furnace, the method comprises the following steps:
b1, heating the temperature in the heating furnace to 1100-1200 ℃ within 2 hours, and preserving the heat for 20-30 min;
b2, heating the temperature in the heating furnace to 1500-;
b3, controlling the heating furnace to raise at the temperature of 20 ℃ per minute, and preserving the heat for 30-45min when the temperature reaches 3500 ℃.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. A cutter preparation process of a high-speed circular cutting machine is characterized by comprising the following steps:
s1, selecting raw materials, namely 2-3 parts of carbon, 1-2 parts of tungsten, 0.6-0.9 part of zinc, 0.3-0.5 part of copper, 5-8 parts of chromium, 0.2-0.5 part of magnesium, 3-4 parts of manganese, 2-2.5 parts of nickel and 60-70 parts of iron;
s2, crushing the raw materials, and mixing the crushed raw materials;
s3, adding the mixed raw materials into a vacuum reaction furnace for heating and melting, wherein the temperature is 3500 ℃, and stirring the melt in the melting process;
s4, manufacturing a mold according to the size of the cutter, injecting the melt into the mold after the mold is finished, cooling the mold, reducing the temperature to 600-;
s5, quenching and tempering the cutter;
and S6, after the processing in the step S5 is finished, polishing two sides of the cutter body, simultaneously roughly edging the cutter by adopting a machine, then manually and flatly grinding the cutter from the back of the cutter to the blade point by adopting a plane grinding method, and simultaneously ensuring that the single side of the edging angle of the cutter is 30 degrees.
2. The process as claimed in claim 1, wherein the mold is preheated to a temperature of 320-440 ℃ before the melt is poured into the mold.
3. The process for preparing the cutter of the high-speed circular cutting machine as claimed in claim 1, wherein the raw material is selected and subjected to acid cleaning to remove surface oxides, comprising the following steps:
a1, separately putting raw materials which are easy to oxidize into different pickling baths, and continuously stirring at the temperature of 30-45 ℃ for 30-40 min;
a2, taking out the pickled raw materials, uniformly spreading the pickled raw materials, drying the materials in the sun, and optionally drying the materials by using a blower;
a3, weighing and proportioning according to the specific gravity of the raw materials.
4. The process for preparing the cutting blade of the high-speed circular cutting machine as claimed in claim 1, wherein the stirring speed is 120r/min when the melt is stirred.
5. The manufacturing process of the cutter of the high-speed circular cutting machine according to claim 1, wherein when the heating is carried out in a vacuum reaction furnace, the manufacturing process comprises the following steps:
b1, heating the temperature in the heating furnace to 1100-1200 ℃ within 2 hours, and preserving the heat for 20-30 min;
b2, heating the temperature in the heating furnace to 1500-;
b3, controlling the heating furnace to raise at the temperature of 20 ℃ per minute, and preserving the heat for 30-45min when the temperature reaches 3500 ℃.
6. The process of claim 1, wherein the quenching step in step S5 is a step quenching method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910828442.8A CN112442626A (en) | 2019-09-03 | 2019-09-03 | Preparation process of cutter of high-speed circular cutting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910828442.8A CN112442626A (en) | 2019-09-03 | 2019-09-03 | Preparation process of cutter of high-speed circular cutting machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112442626A true CN112442626A (en) | 2021-03-05 |
Family
ID=74735391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910828442.8A Pending CN112442626A (en) | 2019-09-03 | 2019-09-03 | Preparation process of cutter of high-speed circular cutting machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112442626A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1540023A (en) * | 2003-04-09 | 2004-10-27 | ������������ʽ���� | High speed tool steel and its mfg. method |
| CN103403209A (en) * | 2011-03-03 | 2013-11-20 | 日立金属株式会社 | Hot work tool steel having excellent toughness, and process of producing same |
| CN104831184A (en) * | 2015-05-24 | 2015-08-12 | 王华美 | Engine cylinder valve group |
| CN104895639A (en) * | 2015-05-24 | 2015-09-09 | 王华美 | High temperature resisting air cylinder exhaust valve group |
| CN105861922A (en) * | 2016-04-28 | 2016-08-17 | 胡银基 | Long-life steel ball for surface treatment and preparation method of steel ball |
| CN105886954A (en) * | 2016-05-07 | 2016-08-24 | 惠安县泰达商贸有限责任公司 | Alloy for fan blade of aircraft engine |
| CN106119720A (en) * | 2016-07-28 | 2016-11-16 | 温州神微型轴有限公司 | A kind of Minisize axial and preparation method thereof |
| CN106591692A (en) * | 2016-12-08 | 2017-04-26 | 新昌县东韩机械有限公司 | Cast iron material with high tenacity formula ratio and production process thereof |
| CN106636910A (en) * | 2017-01-22 | 2017-05-10 | 安徽臣诺机器人科技有限公司 | Wear-resisting and corrosion-resisting alloy casting for mechanical arm and preparation method thereof |
| CN106868417A (en) * | 2016-12-27 | 2017-06-20 | 芜湖锐华暖通科技有限公司 | A kind of low abrasion wear-resistant ball of high rigidity and preparation method thereof |
-
2019
- 2019-09-03 CN CN201910828442.8A patent/CN112442626A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1540023A (en) * | 2003-04-09 | 2004-10-27 | ������������ʽ���� | High speed tool steel and its mfg. method |
| CN103403209A (en) * | 2011-03-03 | 2013-11-20 | 日立金属株式会社 | Hot work tool steel having excellent toughness, and process of producing same |
| CN104831184A (en) * | 2015-05-24 | 2015-08-12 | 王华美 | Engine cylinder valve group |
| CN104895639A (en) * | 2015-05-24 | 2015-09-09 | 王华美 | High temperature resisting air cylinder exhaust valve group |
| CN105861922A (en) * | 2016-04-28 | 2016-08-17 | 胡银基 | Long-life steel ball for surface treatment and preparation method of steel ball |
| CN105886954A (en) * | 2016-05-07 | 2016-08-24 | 惠安县泰达商贸有限责任公司 | Alloy for fan blade of aircraft engine |
| CN106119720A (en) * | 2016-07-28 | 2016-11-16 | 温州神微型轴有限公司 | A kind of Minisize axial and preparation method thereof |
| CN106591692A (en) * | 2016-12-08 | 2017-04-26 | 新昌县东韩机械有限公司 | Cast iron material with high tenacity formula ratio and production process thereof |
| CN106868417A (en) * | 2016-12-27 | 2017-06-20 | 芜湖锐华暖通科技有限公司 | A kind of low abrasion wear-resistant ball of high rigidity and preparation method thereof |
| CN106636910A (en) * | 2017-01-22 | 2017-05-10 | 安徽臣诺机器人科技有限公司 | Wear-resisting and corrosion-resisting alloy casting for mechanical arm and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109252104A (en) | A kind of high-speed steel and its production method | |
| CN108728756A (en) | A kind of high-performance hobboing cutter Disc Cutter Ring Material and preparation method thereof | |
| CN106884124B (en) | A kind of wear-resisting collars of centrifugal casting and preparation method | |
| CN105821279A (en) | High-strength diamond saw blade | |
| CN104018096B (en) | High speed steel roll collar and preparation method thereof | |
| CN104087874B (en) | A kind of high-speed steel roll and preparation method thereof | |
| CN106676409B (en) | High chrome anticentripetal roll collar and its manufacturing method | |
| WO2016140296A1 (en) | Briquette roller and method for producing same | |
| CN101629269A (en) | Smelting process of low chromium ball | |
| CN105014338A (en) | Edge cutting shear blade combination | |
| CN103757545B (en) | Rolling mill guiding high temperature wear resistant alloy material and rolling mill guiding heat treating method | |
| CN102383044A (en) | Multicomponent low alloy high speed steel used for preparing roller | |
| CN108149089A (en) | A kind of preparation of 6D16 aluminum alloy materials hot rolled plate | |
| CN112442626A (en) | Preparation process of cutter of high-speed circular cutting machine | |
| CN104842045A (en) | Machining method for welding special material to cutter cutting edge | |
| CN104073611B (en) | A kind of teeth preparation method | |
| CN108048743A (en) | 3V grades of high-performance hobboing cutter high-speed steel and preparation method thereof | |
| CN105420544B (en) | A kind of one-ton brass band and preparation method thereof | |
| CN102766815B (en) | 7Cr17MoV stainless steel strip and manufacturing method thereof | |
| CN106086696A (en) | A kind of energetic ion slitting wheel alloy material and preparation method thereof | |
| CN101406999A (en) | Flux-cored wire for welding rotary cutter edge and method thereof | |
| CN106222580B (en) | A kind of high finishing mill slitting wheel alloy material and preparation method thereof | |
| CN104195440A (en) | Low-cost high-speed tool steel for cutting drill bit and preparation process of low-cost high-speed tool steel | |
| CN110983186A (en) | High alloy tool steel, method for manufacturing same, and method for using same as cutting edge steel insert-joint slicing knife | |
| CN108179361B (en) | A kind of wear-resisting mechanical bit of low cobalt type |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210305 |
|
| RJ01 | Rejection of invention patent application after publication |