CN111590014A - Forging process of cutter - Google Patents
Forging process of cutter Download PDFInfo
- Publication number
- CN111590014A CN111590014A CN202010465498.4A CN202010465498A CN111590014A CN 111590014 A CN111590014 A CN 111590014A CN 202010465498 A CN202010465498 A CN 202010465498A CN 111590014 A CN111590014 A CN 111590014A
- Authority
- CN
- China
- Prior art keywords
- forging
- raw materials
- cutter
- heating
- temperature
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K11/00—Making cutlery wares; Making garden tools or the like
- B21K11/02—Making cutlery wares; Making garden tools or the like knives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/002—Hybrid process, e.g. forging following casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/08—Upsetting
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention discloses a forging process of a cutter, which comprises the following steps: selecting low-carbon high-alloy stainless steel ingots; extruding by adopting an extruding device to obtain the size of a cutter; putting the extruded raw materials into a heating furnace, and carrying out primary heating and heat preservation; heating the preheated raw materials, putting the heated raw materials into a forging die for forging, upsetting for 7 times, and extending for 6 times; cooling the heated and forged material in air; polishing and trimming the cooled blank; and (4) coating rust preventive oil on the polished and trimmed blank. The invention has the advantages that: the invention has simple forging process, can improve the comprehensive properties such as wear resistance, toughness and the like, improves the processing efficiency, reduces the production cost, and can integrally improve the processing efficiency and the cutter strength by firstly carrying out preliminary extrusion operation on the raw materials.
Description
Technical Field
The invention relates to the technical field of cutter forging, in particular to a forging process of a cutter.
Background
The cutter is a tool commonly used in daily life and can also be a weapon. A tool used for cutting work in machine manufacturing is called a cutting tool. Most knives are machine, but also hand-held. Since tools used in machine manufacturing are basically used for cutting metal materials, the term "tool" is generally understood to mean a metal cutting tool. The cutting tools for cutting wood are called woodworking tools. There is also a class of tools of particular application for geological exploration, well drilling, mine drilling, known as mine tools.
With the development of the mechanical industry in China, the cutting speed and the feed amount are increased day by day in the cutting process, heat generated in unit time is more and more due to the action of friction, sometimes the heating temperature of a cutting edge reaches over 600 ℃, and the cutting edge also bears cutting pressure, under the condition, a cutter still needs to keep high hardness, strength and wear resistance, and the comprehensive performance of the cutter steel needs to be improved continuously. The manufacturability has a severe impact on the mechanical properties of the tool.
Disclosure of Invention
In order to solve the various problems, the invention provides a forging process of a cutter.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: a forging process of a cutter comprises the following steps:
the method comprises the following steps: preparing raw materials: selecting low-carbon high-alloy stainless steel ingots;
step two: extruding the low-carbon high-alloy stainless steel ingot selected in the step one by using an extruding device to obtain the size of a cutter;
step three: putting the extruded raw materials into a heating furnace, and carrying out primary heating and heat preservation;
step four: heating the preheated raw material to 1140-1170 ℃, putting the raw material into a forging die for forging, upsetting for 7 times, and extending for 6 times;
step five: cooling the heated and forged material in air;
step six: polishing and trimming the cooled blank;
step seven: and (4) coating rust preventive oil on the polished and trimmed blank.
Preferably, the temperature of the first heating in the third step is less than 550 ℃, the first heating speed is controlled to be less than or equal to 70 ℃/H, and then the temperature is kept at 900 ℃.
Preferably, the forging starting temperature in the fourth step is 1060-1090 ℃, the final forging temperature is 890-920 ℃, and the forging stopping temperature is 820-880 ℃.
Preferably, the cooling speed in the step five is 22-28 ℃/h.
Preferably, the forging die in the fourth step is preheated to 500 ℃ before forging.
Preferably, in the second step, a hydraulic press is adopted to extrude the raw materials.
Compared with the prior art, the invention has the advantages that: the invention has simple forging process, can improve the comprehensive properties such as wear resistance, toughness and the like, improves the processing efficiency, reduces the production cost, and can integrally improve the processing efficiency and the cutter strength by firstly carrying out preliminary extrusion operation on the raw materials.
Detailed Description
The present invention will be described in further detail with reference to examples.
Example 1
A forging process of a cutter comprises the following steps:
the method comprises the following steps: preparing raw materials: selecting low-carbon high-alloy stainless steel ingots;
step two: extruding the low-carbon high-alloy stainless steel ingot selected in the step one by using an extruding device to obtain the size of a cutter;
step three: putting the extruded raw materials into a heating furnace, and carrying out primary heating and heat preservation;
step four: heating the preheated raw materials to 1140 ℃, putting the raw materials into a forging die for forging, upsetting the raw materials for 7 times, and extending the raw materials for 6 times;
step five: cooling the heated and forged material in air;
step six: polishing and trimming the cooled blank;
step seven: and (4) coating rust preventive oil on the polished and trimmed blank.
The temperature of the first heating in the third step is less than 550 ℃, the first heating speed is controlled to be less than or equal to 70 ℃/H, and then the temperature is kept at 900 ℃.
The forging starting temperature in the fourth step is 1060 ℃, the forging finishing temperature is 890 ℃, and the forging stopping temperature is 820 ℃.
The cooling speed in the step five is 22 ℃/h.
The forging die in the fourth step is preheated to 500 ℃ before forging.
And in the second step, a hydraulic press is adopted to extrude the raw materials.
Example 2
A forging process of a cutter comprises the following steps:
the method comprises the following steps: preparing raw materials: selecting low-carbon high-alloy stainless steel ingots;
step two: extruding the low-carbon high-alloy stainless steel ingot selected in the step one by using an extruding device to obtain the size of a cutter;
step three: putting the extruded raw materials into a heating furnace, and carrying out primary heating and heat preservation;
step four: heating the preheated raw material to 1170 ℃, putting the heated raw material into a forging die for forging, upsetting for 7 times, and extending for 6 times;
step five: cooling the heated and forged material in air;
step six: polishing and trimming the cooled blank;
step seven: and (4) coating rust preventive oil on the polished and trimmed blank.
The temperature of the first heating in the third step is less than 550 ℃, the first heating speed is controlled to be less than or equal to 70 ℃/H, and then the temperature is kept at 900 ℃.
The initial forging temperature in the fourth step is 1090 ℃, the final forging temperature is 920 ℃, and the final forging temperature is 880 ℃.
The cooling rate in the fifth step is 28 ℃/h.
The forging die in the fourth step is preheated to 500 ℃ before forging.
And in the second step, a hydraulic press is adopted to extrude the raw materials.
Example 3
A forging process of a cutter comprises the following steps:
the method comprises the following steps: preparing raw materials: selecting low-carbon high-alloy stainless steel ingots;
step two: extruding the low-carbon high-alloy stainless steel ingot selected in the step one by using an extruding device to obtain the size of a cutter;
step three: putting the extruded raw materials into a heating furnace, and carrying out primary heating and heat preservation;
step four: heating the preheated raw materials to 1155 ℃, putting the raw materials into a forging die for forging, upsetting the raw materials for 7 times, and extending the raw materials for 6 times;
step five: cooling the heated and forged material in air;
step six: polishing and trimming the cooled blank;
step seven: and (4) coating rust preventive oil on the polished and trimmed blank.
The temperature of the first heating in the third step is less than 550 ℃, the first heating speed is controlled to be less than or equal to 70 ℃/H, and then the temperature is kept at 900 ℃.
The forging starting temperature in the fourth step is 1075 ℃, the final forging temperature is 900 ℃, and the forging stopping temperature is 850 ℃.
The cooling speed in the step five is 25 ℃/h.
The forging die in the fourth step is preheated to 500 ℃ before forging.
And in the second step, a hydraulic press is adopted to extrude the raw materials.
The invention is not to be considered as limited to the specific embodiments thereof, and all changes, equivalents and improvements that can be made by those skilled in the art are intended to be included within the scope of the invention, all within the spirit and principle of the inventive concept.
Claims (6)
1. The forging process of the cutter is characterized by comprising the following steps of:
the method comprises the following steps: preparing raw materials: selecting low-carbon high-alloy stainless steel ingots;
step two: extruding the low-carbon high-alloy stainless steel ingot selected in the step one by using an extruding device to obtain the size of a cutter;
step three: putting the extruded raw materials into a heating furnace, and carrying out primary heating and heat preservation;
step four: heating the preheated raw material to 1140-1170 ℃, putting the raw material into a forging die for forging, upsetting for 7 times, and extending for 6 times;
step five: cooling the heated and forged material in air;
step six: polishing and trimming the cooled blank;
step seven: and (4) coating rust preventive oil on the polished and trimmed blank.
2. The forging process of a cutter according to claim 1, wherein: the temperature of the first heating in the third step is less than 550 ℃, the first heating speed is controlled to be less than or equal to 70 ℃/H, and then the temperature is kept at 900 ℃.
3. The forging process of a cutter according to claim 1, wherein: the forging starting temperature in the fourth step is 1060-1090 ℃, the final forging temperature is 890-920 ℃, and the forging stopping temperature is 820-880 ℃.
4. The forging process of a cutter according to claim 1, wherein: the cooling speed in the step five is 22-28 ℃/h.
5. The forging process of a cutter according to claim 1, wherein: the forging die in the fourth step is preheated to 500 ℃ before forging.
6. The forging process of a cutter according to claim 1, wherein: and in the second step, a hydraulic press is adopted to extrude the raw materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010465498.4A CN111590014A (en) | 2020-05-28 | 2020-05-28 | Forging process of cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010465498.4A CN111590014A (en) | 2020-05-28 | 2020-05-28 | Forging process of cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111590014A true CN111590014A (en) | 2020-08-28 |
Family
ID=72184086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010465498.4A Pending CN111590014A (en) | 2020-05-28 | 2020-05-28 | Forging process of cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111590014A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1504284A (en) * | 2002-11-29 | 2004-06-16 | 北京北方希望科技开发公司 | Preparation method of cutter for meat machinery |
| WO2005110660A1 (en) * | 2004-05-18 | 2005-11-24 | Christian Svendsen | Procedure for manufacturing a compound metal object with a pattern |
| CN106734800A (en) * | 2016-12-22 | 2017-05-31 | 潘承民 | A kind of stainless steel knife forging technology |
| CN108277431A (en) * | 2018-01-08 | 2018-07-13 | 武汉科技大学 | A kind of shield machine cutter round steel and its manufacturing method |
| CN109482795A (en) * | 2018-11-29 | 2019-03-19 | 南通四合不锈钢制品有限公司 | A kind of forging method of cook's anti-sticking cutting tool |
-
2020
- 2020-05-28 CN CN202010465498.4A patent/CN111590014A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1504284A (en) * | 2002-11-29 | 2004-06-16 | 北京北方希望科技开发公司 | Preparation method of cutter for meat machinery |
| WO2005110660A1 (en) * | 2004-05-18 | 2005-11-24 | Christian Svendsen | Procedure for manufacturing a compound metal object with a pattern |
| CN106734800A (en) * | 2016-12-22 | 2017-05-31 | 潘承民 | A kind of stainless steel knife forging technology |
| CN108277431A (en) * | 2018-01-08 | 2018-07-13 | 武汉科技大学 | A kind of shield machine cutter round steel and its manufacturing method |
| CN109482795A (en) * | 2018-11-29 | 2019-03-19 | 南通四合不锈钢制品有限公司 | A kind of forging method of cook's anti-sticking cutting tool |
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Application publication date: 20200828 |