CN114427017A - Heat treatment process of high-strength corrosion-resistant high-alloy cutter - Google Patents
Heat treatment process of high-strength corrosion-resistant high-alloy cutter Download PDFInfo
- Publication number
- CN114427017A CN114427017A CN202210090971.4A CN202210090971A CN114427017A CN 114427017 A CN114427017 A CN 114427017A CN 202210090971 A CN202210090971 A CN 202210090971A CN 114427017 A CN114427017 A CN 114427017A
- Authority
- CN
- China
- Prior art keywords
- cutter
- strength corrosion
- heat treatment
- treatment process
- resistant high
- 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
Images
Classifications
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
- C21D1/76—Adjusting the composition of the atmosphere
-
- 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
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
- C21D1/773—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material under reduced pressure or vacuum
-
- 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
- C21D6/007—Heat treatment of ferrous alloys containing Co
-
- 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
- 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
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- 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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- 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
- C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
-
- 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
- C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
-
- 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
- C22C38/30—Ferrous alloys, e.g. steel alloys containing chromium with cobalt
-
- 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
- C21D2211/001—Austenite
-
- 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
Landscapes
- 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 provides a high-strength corrosion-resistant high-alloy cutter, and a heat treatment process of the high-strength corrosion-resistant high-alloy cutter, which comprises the following steps of: preheating a cutter in a first stage, preheating a cutter in a second stage, quenching the cutter, tempering the cutter and the like, wherein a gas quenching method is adopted, the cutter is placed in a heating furnace with the temperature of 1100-1200 ℃ and is subjected to heat preservation for 10min, then the heating furnace is vacuumized, then inert gas is introduced into the furnace and is cooled to room temperature, and the obtained high-strength corrosion-resistant high-alloy cutter has excellent performance, the microstructure of the high-strength corrosion-resistant high-alloy cutter after the heat treatment process is tempered martensite, carbide and residual austenite, the size of the carbide is 0.2 mu m on average, and the amount of the residual austenite is less than or equal to 5.1 percent; the hardness of the cutting edge is HRC 60-62; the wood crushing machine has the advantages of no burr and mouth breakage phenomenon, high strength and corrosion resistance when being used for crushing wood; the service life is greatly prolonged, and the production cost is reduced.
Description
Technical Field
The invention belongs to the technical field of cutter preparation, and particularly relates to a heat treatment process of a high-strength corrosion-resistant high-alloy cutter.
Background
The alloy blade on the wood crusher is the tooth of the crusher, and the size and the yield of the wood chips are related to the alloy blade. At present, most of wood crushing blades on the market are made of alloy steel, and the cutter has the characteristics of short service life, and poor wear resistance, corrosion resistance and strength; the most important thing is the heat treatment process of the cutter to improve the wear resistance, corrosion resistance and strength and prolong the service life of the cutter; the heat treatment process refers to a metal hot working process for obtaining expected structures and properties of materials in a solid state through heating, heat preservation and cooling. Most of the cutters for machining are made of steel, and the cutting effect and the service life of the cutters are directly influenced by the performance of the cutters, so that the cutters are subjected to heat treatment to obtain excellent cutting performance. However, the heat treatment process adopted by the alloy steel cutter with different components is different.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a heat treatment process of a high-strength corrosion-resistant high-alloy cutter.
The technical scheme adopted by the invention is as follows:
the invention provides a heat treatment process of a high-strength corrosion-resistant high-alloy cutter, which comprises the following steps:
(S1) preheating the cutter in the first stage: heating the cutter to 350-400 ℃ and preserving heat for 20 min;
(S2) preheating the tool in the second stage: heating the cutter to 800-; keeping the temperature of the cutter at 800-;
(S3) tool quenching: placing the cutter in a heating furnace with the heating temperature of 1100-1200 ℃ and preserving heat for 10min, then vacuumizing the heating furnace, and introducing inert gas into the furnace to cool to room temperature.
(S4) tempering the cutter.
Further, in step S3, the vacuum degree is less than 4 Pa; the inert gas is nitrogen.
Further, the tool tempering treatment in step S4: heating the cutter to 550-580 ℃ and preserving heat for 1h, then naturally cooling in the furnace to below 100 ℃, repeating the steps for 3 times, heating the cutter to 200 ℃ after cooling to below 100 ℃ for the third time and preserving heat for 1h, and finally naturally cooling the cutter to room temperature.
Further, the high-strength corrosion-resistant high-alloy cutter comprises the following components in percentage by mass: 0.54-0.64%, Si: 0.30-0.38%, Mn: 0.25-0.45%, Cr: 4.31-5.85%, W: 2.11-2.48%, Mo: 1.42-1.75%, V: 0.12-0.24%, Co: 0.18 to 0.31%, Zr: 0.007-0.01%, Ti: 0.003-0.015%, Nb: 0.11-0.13%, S: 0.004% -0.02%, P: less than or equal to 0.025 percent, and the balance of Fe and inevitable impurities. The addition of a small amount of zirconium can obviously prolong the cutting life of the low-temperature tempered high-carbon tool steel.
Further, the high-strength corrosion-resistant high-alloy cutter comprises a cutter body and a cutting edge, wherein a plurality of waist-shaped holes and U-shaped grooves are formed in the upper end of the cutter body, the cutting edge is arranged at the lower end of the cutter body, and the cutter body is connected with a cutter seat of the pulverizer through a bolt penetrating through the waist-shaped holes.
Further, a chamfer inclined plane is arranged on one side of the lower end of the cutter body opposite to the cutting edge, and the angle of the chamfer inclined plane is the cutting angle alpha =30 +/-1 degrees.
Furthermore, the upper end of the knife body is provided with 2 kidney-shaped holes and 4U-shaped grooves.
Further, the hardness of the cutting edge is HRC 60-62.
Furthermore, the microstructure of the high-strength corrosion-resistant high-alloy cutter after the heat treatment process comprises tempered martensite, carbide and retained austenite, the average size of the carbide is 0.2 mu m, and the retained austenite amount is less than or equal to 5.1%.
The invention has the beneficial effects that:
the invention discloses a heat treatment process of a high-strength corrosion-resistant high-alloy cutter, which comprises the steps of preheating the cutter at the first stage, preheating the cutter at the second stage, quenching the cutter, tempering the cutter and the like, wherein a gas quenching method is adopted, the process is simple, compared with water quenching, the obtained high-strength corrosion-resistant high-alloy cutter has excellent performance, the microstructure of the high-strength corrosion-resistant high-alloy cutter after the heat treatment process is tempered martensite, carbide and residual austenite, the average size of the carbide is 0.2 mu m, and the amount of the residual austenite is less than or equal to 5.1 percent; the hardness of the cutting edge is HRC 60-62; the wood crushing machine has the advantages of no burr and mouth breakage phenomenon, high strength and corrosion resistance when being used for crushing wood; the service life is greatly prolonged, and the production cost is reduced.
Drawings
FIG. 1 is a schematic structural view of a high-strength corrosion-resistant high-alloy cutting tool according to the present invention;
fig. 2 is a schematic side view of the high-strength corrosion-resistant high-alloy cutting tool according to the present invention.
In the figure: the knife comprises a knife body 1, a knife edge 2, a waist-shaped hole 11, a U-shaped groove 12 and a chamfer inclined plane 13.
Detailed Description
The invention will be further elucidated by means of several specific examples, which are intended to be illustrative only and not limiting.
Example 1:
a heat treatment process of a high-strength corrosion-resistant high-alloy cutter comprises the following steps:
(S1) preheating of the first stage of the tool: heating the cutter to 350 ℃ and preserving heat for 20 min;
(S2) preheating the tool in the second stage: heating the cutter to 800 ℃; keeping the temperature of the cutter at 800 ℃, introducing ammonia gas into the heating furnace, and keeping the temperature for 4 hours;
(S3) tool quenching: placing the cutter in a heating furnace heated to 1100 ℃ and preserving heat for 10min, then vacuumizing the heating furnace until the vacuum degree is less than 4Pa, and then introducing inert gas nitrogen into the furnace to cool to room temperature.
(S4) tempering the cutter: heating the cutter to 550 ℃, preserving heat for 1h, then naturally cooling in a furnace to below 100 ℃, repeating the steps for 3 times, heating the cutter to 200 ℃ after cooling to below 100 ℃ for the third time, preserving heat for 1h, and finally naturally cooling the cutter to room temperature.
Further, the high-strength corrosion-resistant high-alloy cutter comprises the following components in percentage by mass: 0.54-0.64%, Si: 0.30-0.38%, Mn: 0.25-0.45%, Cr: 4.31-5.85%, W: 2.11-2.48%, Mo: 1.42-1.75%, V: 0.12-0.24%, Co: 0.18 to 0.31%, Zr: 0.007-0.01%, Ti: 0.003-0.015%, Nb: 0.11-0.13%, S: 0.004% -0.02%, P: less than or equal to 0.025 percent, and the balance of Fe and inevitable impurities. The addition of a small amount of zirconium can obviously prolong the cutting life of the low-temperature tempered high-carbon tool steel.
Further, as shown in fig. 1, the high-strength corrosion-resistant high-alloy cutter comprises a cutter body 1 and a cutting edge 2, wherein 2 kidney-shaped holes 11 and 4U-shaped grooves 12 are formed in the upper end of the cutter body 1. The lower end is provided with a cutting edge 2, and the cutter body 1 is connected with a cutter seat of the pulverizer through a bolt penetrating through the waist-shaped hole 11. The lower end of the cutter body 1 is provided with a chamfer inclined plane 13 at one side opposite to the cutting edge 2, and the angle of the chamfer inclined plane 13 is the cutting angle alpha =30 +/-1 degrees. .
After the heat treatment process, the microstructure of the high-strength corrosion-resistant high-alloy cutter is tempered martensite, carbide and retained austenite, the average size of the carbide is 0.2 mu m, and the retained austenite amount is 5.01%. The cutting edge hardness of the cutting edge is HRC 61.
Example 2
A heat treatment process of a high-strength corrosion-resistant high-alloy cutter comprises the following steps:
(S1) preheating the cutter in the first stage: heating the cutter to 400 ℃ and preserving heat for 20 min;
(S2) preheating the tool in the second stage: heating the cutter to 830 ℃; keeping the temperature of the cutter at 830 ℃, introducing ammonia gas into the heating furnace, and keeping the temperature for 3.5 hours;
(S3) tool quenching: placing the cutter in a heating furnace with the temperature of 1200 ℃ and preserving heat for 10min, then vacuumizing the heating furnace until the vacuum degree is less than 4Pa, and then introducing inert gas nitrogen into the furnace to cool to the room temperature.
(S4) tempering the cutter: heating the cutter to 580 ℃ and preserving heat for 1h, then naturally cooling in a furnace to below 100 ℃, repeating the process for 3 times, heating the cutter to 200 ℃ and preserving heat for 1h after cooling to below 100 ℃ for the third time, and finally naturally cooling the cutter to room temperature.
Further, the high-strength corrosion-resistant high-alloy cutter comprises the following components in percentage by mass: 0.54-0.64%, Si: 0.30-0.38%, Mn: 0.25-0.45%, Cr: 4.31-5.85%, W: 2.11-2.48%, Mo: 1.42-1.75%, V: 0.12-0.24%, Co: 0.18 to 0.31%, Zr: 0.007-0.01%, Ti: 0.003-0.015%, Nb: 0.11-0.13%, S: 0.004% -0.02%, P: less than or equal to 0.025 percent, and the balance of Fe and inevitable impurities. The cutting life of the low-temperature tempered high-carbon tool steel is obviously prolonged by adding a small amount of zirconium.
Further, corrosion-resistant high alloy cutter of high strength, including cutter body 1 and cutting edge 2, cutter body 1 upper end is equipped with 2 waist type holes 11 and 4U type grooves 12. The lower end is provided with a cutting edge 2, and the cutter body 1 is connected with a cutter seat of the pulverizer through a bolt penetrating through the waist-shaped hole 11. The lower end of the cutter body 1 is provided with a chamfer inclined plane 13 at one side opposite to the cutting edge 2, and the angle of the chamfer inclined plane 13 is the cutting angle alpha =30 +/-1 degrees.
After the heat treatment process, the microstructure of the high-strength corrosion-resistant high-alloy cutter is tempered martensite, carbide and retained austenite, the average size of the carbide is 0.2 mu m, and the retained austenite amount is 4.91%. The cutting edge hardness of the cutting edge (2) is HRC 62.
Example 3
A heat treatment process of a high-strength corrosion-resistant high-alloy cutter comprises the following steps:
(S1) preheating the cutter in the first stage: heating the cutter to 380 ℃ and preserving heat for 20 min;
(S2) preheating the tool in the second stage: heating the cutter to 820 ℃; keeping the temperature of the cutter at 820 ℃, introducing ammonia gas into the heating furnace, and keeping the temperature for 3 hours;
(S3) tool quenching: placing the cutter in a heating furnace heated to 1150 ℃ and preserving heat for 10min, then vacuumizing the heating furnace until the vacuum degree is less than 4Pa, and then introducing inert gas nitrogen into the furnace and cooling to room temperature.
(S4) tempering the cutter: heating the cutter to 560 ℃ and preserving heat for 1h, then naturally cooling in the furnace to below 100 ℃, repeating the steps for 3 times, heating the cutter to 200 ℃ and preserving heat for 1h after cooling to below 100 ℃ for the third time, and finally naturally cooling the cutter to room temperature.
Further, the high-strength corrosion-resistant high-alloy cutter comprises the following components in percentage by mass: 0.54-0.64%, Si: 0.30-0.38%, Mn: 0.25-0.45%, Cr: 4.31-5.85%, W: 2.11-2.48%, Mo: 1.42-1.75%, V: 0.12-0.24%, Co: 0.18 to 0.31%, Zr: 0.007-0.01%, Ti: 0.003-0.015%, Nb: 0.11-0.13%, S: 0.004% -0.02%, P: less than or equal to 0.025 percent, and the balance of Fe and inevitable impurities. The addition of a small amount of zirconium can obviously prolong the cutting life of the low-temperature tempered high-carbon tool steel.
Further, corrosion-resistant high alloy cutter of high strength, including cutter body 1 and cutting edge 2, cutter body 1 upper end is equipped with 2 waist type holes 11 and 4U type grooves 12. The lower end is provided with a cutting edge 2, and the cutter body 1 is connected with a cutter seat of the pulverizer through a bolt penetrating through the waist-shaped hole 11. The lower end of the cutter body 1 is provided with a chamfer inclined plane 13 at one side opposite to the cutting edge 2, and the angle of the chamfer inclined plane 13 is the cutting angle alpha =30 +/-1 degrees. The cutting edge hardness of the cutting edge (2) is HRC 60-62.
The microstructure of the high-strength corrosion-resistant high-alloy cutter after the heat treatment process comprises tempered martensite, carbide and retained austenite, the average size of the carbide is 0.2 mu m, and the amount of the retained austenite is 5.07%. The cutting edge hardness of the cutting edge (2) is HRC 60.
Comparative example 1
A heat treatment process of a high-strength corrosion-resistant high-alloy cutter comprises the following steps:
(S1) preheating the cutter in the first stage: heating the cutter to 380 ℃ and preserving heat for 20 min;
(S2) preheating the tool in the second stage: heating the cutter to 820 ℃; keeping the temperature of the cutter at 820 ℃, introducing ammonia gas into the heating furnace, and keeping the temperature for 3 hours;
(S3) tool quenching: and (3) placing the cutter in a heating furnace heated to 1150 ℃, preserving heat for 10min, taking out the cutter from the heating furnace, placing the cutter in water at 20-25 ℃, and taking out the cutter after 30min until the cutter is cooled to room temperature.
(S4) tempering the cutter: heating the cutter to 560 ℃ and preserving heat for 1h, then naturally cooling the cutter to below 100 ℃ in a furnace, and finally naturally cooling the cutter to room temperature.
Further, the high-strength corrosion-resistant high-alloy cutter comprises the following components in percentage by mass: 0.54-0.64%, Si: 0.30-0.38%, Mn: 0.25-0.45%, Cr: 4.31-5.85%, W: 2.11-2.48%, Mo: 1.42-1.75%, V: 0.12-0.24%, Co: 0.18 to 0.31%, Zr: 0.007-0.01%, Ti: 0.003% -0.015%, Nb: 0.11-0.13%, S: 0.004% -0.02%, P: less than or equal to 0.025 percent, and the balance of Fe and inevitable impurities. The addition of a small amount of zirconium can obviously prolong the cutting life of the low-temperature tempered high-carbon tool steel.
Further, corrosion-resistant high alloy cutter of high strength, including cutter body 1 and cutting edge 2, cutter body 1 upper end is equipped with 2 waist type holes 11 and 4U type grooves 12. The lower end of the knife body is provided with a cutting edge 2, and the knife body 1 is connected with a knife seat of the pulverizer through a bolt penetrating through the waist-shaped hole 11. The lower end of the cutter body 1 is provided with a chamfer inclined plane 13 at one side opposite to the cutting edge 2, and the angle of the chamfer inclined plane 13 is the cutting edge angle alpha =30 +/-1 degrees.
After the heat treatment process, the microstructure of the high-strength corrosion-resistant high-alloy cutter is tempered martensite, carbide and retained austenite, the average size of the carbide is 0.4 mu m, and the retained austenite amount is 5.8%. The cutting edge hardness of the cutting edge 2 is HRC 58.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications can be made without departing from the principle of the present invention, and these modifications should also be regarded as the protection scope of the present invention.
Claims (9)
1. The heat treatment process of the high-strength corrosion-resistant high-alloy cutter is characterized by comprising the following steps of:
(S1) preheating the cutter in the first stage: heating the cutter to 350-400 ℃ and preserving heat for 20 min;
(S2) preheating the tool in the second stage: heating the cutter to 800-; keeping the temperature of the cutter at 800-;
(S3) tool quenching: placing the cutter in a heating furnace with the heating temperature of 1100-;
(S4) tempering the tool.
2. The heat treatment process of the high-strength corrosion-resistant high-alloy cutter according to claim 1, characterized in that: in step S3, the vacuum degree is less than 4 Pa; the inert gas is nitrogen.
3. The heat treatment process of the high-strength corrosion-resistant high-alloy cutter according to claim 1, characterized in that: the tool tempering treatment in step S4: heating the cutter to 550-580 ℃ and preserving heat for 1h, then naturally cooling in the furnace to below 100 ℃, repeating the steps for 3 times, heating the cutter to 200 ℃ after cooling to below 100 ℃ for the third time and preserving heat for 1h, and finally naturally cooling the cutter to room temperature.
4. The heat treatment process of the high-strength corrosion-resistant high-alloy cutter according to claim 1, characterized in that: the high-strength corrosion-resistant high-alloy cutter comprises the following components in percentage by mass: 0.54-0.64%, Si: 0.30-0.38%, Mn: 0.25-0.45%, Cr: 4.31-5.85%, W: 2.11-2.48%, Mo: 1.42-1.75%, V: 0.12-0.24%, Co: 0.18 to 0.31%, Zr: 0.007-0.01%, Ti: 0.003-0.015%, Nb: 0.11-0.13%, S: 0.004% -0.02%, P: less than or equal to 0.025 percent, and the balance of Fe and inevitable impurities.
5. The heat treatment process of the high-strength corrosion-resistant high-alloy cutter according to claim 1, characterized in that: the high-strength corrosion-resistant high-alloy cutter comprises a cutter body (1) and a cutting edge (2), wherein a plurality of waist-shaped holes (11) and U-shaped grooves (12) are formed in the upper end of the cutter body (1), the cutting edge (2) is arranged at the lower end of the cutter body, and the cutter body (1) is connected with a cutter seat of a pulverizer through a bolt penetrating through the waist-shaped holes (11).
6. The heat treatment process of the high-strength corrosion-resistant high-alloy cutter according to claim 4, characterized in that: one side of the lower end of the cutter body (1) opposite to the cutting edge (2) is provided with a chamfer inclined plane (13), and the angle of the chamfer inclined plane (13), namely the cutting edge angle alpha =30 +/-1 degrees.
7. The heat treatment process of the high-strength corrosion-resistant high-alloy cutter according to claim 4, characterized in that: the upper end of the cutter body (1) is provided with 2 waist-shaped holes (11) and 4U-shaped grooves (12).
8. The heat treatment process of the high-strength corrosion-resistant high-alloy cutter according to claim 4, characterized in that: the cutting edge hardness of the cutting edge (2) is HRC 60-62.
9. The heat treatment process of the high-strength corrosion-resistant high-alloy cutter according to claim 2, characterized in that: after the heat treatment process, the microstructure of the high-strength corrosion-resistant high-alloy cutter is tempered martensite, carbide and retained austenite, the average size of the carbide is 0.2 mu m, and the retained austenite amount is less than or equal to 5.1%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210090971.4A CN114427017A (en) | 2022-01-26 | 2022-01-26 | Heat treatment process of high-strength corrosion-resistant high-alloy cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210090971.4A CN114427017A (en) | 2022-01-26 | 2022-01-26 | Heat treatment process of high-strength corrosion-resistant high-alloy cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114427017A true CN114427017A (en) | 2022-05-03 |
Family
ID=81312906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210090971.4A Pending CN114427017A (en) | 2022-01-26 | 2022-01-26 | Heat treatment process of high-strength corrosion-resistant high-alloy cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114427017A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115595575A (en) * | 2022-10-17 | 2023-01-13 | 阳江合金材料实验室（Cn） | Heat treatment method for improving hardness of cutting edge of laser cladding titanium alloy cutter and cutter |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013108112A (en) * | 2011-11-18 | 2013-06-06 | Mitsubishi Materials Corp | End mill made of alloy steel |
| CN111286682A (en) * | 2020-03-18 | 2020-06-16 | 温岭市云福热处理厂 | Low-alloy ultrahigh-strength steel and heat treatment process thereof |
| KR20200083006A (en) * | 2018-12-31 | 2020-07-08 | 고려전통기술 주식회사 | Method for manufacturing knife |
| CN112025231A (en) * | 2020-08-18 | 2020-12-04 | 南京军平机械制造有限公司 | Machining process for machining cutter |
| CN113403568A (en) * | 2021-06-01 | 2021-09-17 | 温岭市云福热处理厂 | Low-carbon steel and heat treatment process thereof |
-
2022
- 2022-01-26 CN CN202210090971.4A patent/CN114427017A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013108112A (en) * | 2011-11-18 | 2013-06-06 | Mitsubishi Materials Corp | End mill made of alloy steel |
| KR20200083006A (en) * | 2018-12-31 | 2020-07-08 | 고려전통기술 주식회사 | Method for manufacturing knife |
| CN111286682A (en) * | 2020-03-18 | 2020-06-16 | 温岭市云福热处理厂 | Low-alloy ultrahigh-strength steel and heat treatment process thereof |
| CN112025231A (en) * | 2020-08-18 | 2020-12-04 | 南京军平机械制造有限公司 | Machining process for machining cutter |
| CN113403568A (en) * | 2021-06-01 | 2021-09-17 | 温岭市云福热处理厂 | Low-carbon steel and heat treatment process thereof |
Non-Patent Citations (1)
| Title |
|---|
| 王贵成: "磨削淬硬加工技术", 国防工业出版社, pages: 227 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115595575A (en) * | 2022-10-17 | 2023-01-13 | 阳江合金材料实验室（Cn） | Heat treatment method for improving hardness of cutting edge of laser cladding titanium alloy cutter and cutter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104099516B (en) | A kind of high temperature resistant turbine blade and production technology thereof | |
| CN100390305C (en) | Deep cooling treatment method of high speed steel tool | |
| CN103009026B (en) | A kind of roller shears processing method with high-wearing feature and strong impact resistance | |
| JP2010503770A (en) | Steel alloys, holders or holder details for plastic forming tools, toughened blanks for holders or holder details, steel alloy production methods | |
| CN101880836B (en) | Boron-containing die steel and heat treatment method thereof | |
| CN114427017A (en) | Heat treatment process of high-strength corrosion-resistant high-alloy cutter | |
| CN102126007B (en) | Method for manufacturing compound blade of agricultural harvester | |
| CN103045949A (en) | Large marine high strength corrosion-resistant stainless-steel exhaust valve seat with internal orifice diameter of larger than 220 mm | |
| CN112048668B (en) | High-hardness steel for shield cutter and manufacturing method thereof | |
| CN102796958A (en) | Alloy designed steel mechanical blade for preventing network carbide on CrWMn steel from being separated out | |
| CN101838727B (en) | Heat treatment method for carbide blade base | |
| CN101962738B (en) | Superfine carbide high-alloy tool steel shear-steel splicing mechanical blade | |
| CN109280860A (en) | A kind of wear-resistant blade and its processing technology for cutting leaching membrane paper | |
| CN115369319B (en) | Weldable high-strength high-toughness wear-resistant material and heat treatment process thereof | |
| CN102912099A (en) | Heat treatment method for hard alloy blade | |
| CN111996469B (en) | High-hardness ferroalloy and preparation method and application thereof | |
| CN111647797B (en) | High-speed tool steel and steel heat treatment method thereof | |
| CN107130089B (en) | A kind of hardening technique after high-speed steel soldering | |
| JP2021011637A (en) | Cold work tool steel | |
| CN109182926A (en) | A kind of heat treatment process of high-speed steel | |
| Kovalenko et al. | Increase in the durability of the tool, utilized in aviation machine building and with the reconditioning of the air vessels | |
| CN109287262A (en) | A kind of rice harvesting machine knife blade and its processing method | |
| CN104233101A (en) | Rolling-cut type bilateral scissors and manufacturing method thereof | |
| CN111826592B (en) | High-temperature ablation-resistant low-carbon medium-low alloy steel and preparation method thereof | |
| CN111647798B (en) | High-speed tool steel material for woodwork and preparation method thereof |
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 |