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Anonymous users2024-02-0660si2mnSpring steel
60si2mn standard:
gb/t 1222-2007
60si2mn characteristics and scope of application:
It is a widely used silicon-manganese spring steel for strength, elasticity and hardenability.
Slightly higher than 55si2mn. It is suitable for the production of flat springs with large loads or coil springs with a wire diameter of less than 30mm in the railway vehicle and automobile tractor industry, and is also suitable for the production of heat-resistant springs in non-corrosive media with a working temperature of less than 250 and large and important coiled springs that bear alternating loads and work under high stress.
60Si2mn Chemical Composition:
Carbon C: Silicon Si:
Manganese mn:sulfur s:
Phosphorus p:
Chromium cr:
Nickel ni:
Copper cu:
60si2mn Delivery Status:
Hot-rolled steel is delivered in heat-treated or non-heat-treated condition, and cold-drawn steel is delivered in heat-treated condition.
60si2mn Main Specifications:
60Si2Mn round bar, 60Si2Mn rolled bar, 60Si2mn cold drawn bar, 60Si2mn forging bar, 60Si2mn plate, 60Si2mn flat bar.
60Si2mn forgings, 60Si2mn forging rings, 60Si2mn machining parts, 60Si2mn pipes, 60si2mn forging cakes.
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Anonymous users2024-02-05Spheroidized annealed tissue: globular pearlite.
Ferrite, properties: hardness, strength is not high, easy to machine.
Normalizing. Structure: fine flake pearlite + ferrite, performance: hardness and strength are slightly higher than spheroidized annealing, which is easy to process.
Quench. Structure: martensitic + residual austenite, properties: high hardness, low strength, poor plasticity.
Tempered structure: tempered dulceite, performance: high hardness, strength, especially high elastic limit, suitable for all kinds of elastic elements, such as various coil springs, leaf springs, etc.
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Anonymous users2024-02-04Typical spring steel, its heat treatment process is quenching and medium temperature tempering, and the treated structure is tempered with quenching and quenchite with good elasticity.
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Anonymous users2024-02-03Heat treatment process.
Spheroidization annealing: 850 degree heating, oil cooling quenching, short-term isothermal spheroidization process (790 degree heating for 25min, quenching to 680 degrees for 1h, furnace cooling to 500 degrees for baking) can obtain the ideal spheroidization structure.
The quenching temperature of 60si2mn steel is 850 degrees to 870 degrees normally, and the oil is cooled. The tempering temperature depends on the hardness requirements of the mold parts, such as:
400 degree tempering, hardness 46HRC;
500 degree tempering, hardness 40HRC;
600 degree tempering, hardness 34HRC.
The tempering performance between 150 and 160 degrees is optimally matched, and attention must be paid to avoid the tempering brittle zone of about 300 degrees. The tempering temperature can be increased to about 250 degrees, and the hardness is 55 60hrc, which has good toughness.
AC1-755, AC3 = 810, AR1 = 700, AR3 = 770, MS-300 305, annealing: 750C-furnace cooling-HBS 222
Normalizing: 830 860C-air-cooled-HBS 302
Quenching: 870C-Oil-HRC>61
HRC: 150C-61, 200C-60, 300C-56, 400C-51, 500C-43, 550C-38, 600C-33, 650C-29
Commonly used tempering temperature 430 480C, water or air, HRC45 50
The following are the parameters of heat treatment of automotive leaf springs.
The quenching heating and holding time is related to the thickness: mm min, 8 3, 12 5
The tempering and holding time is related to the thickness: mm min, < 10 25-30, 10-15 30-35, 15-20 40-45, 20-25 45-50.
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Anonymous users2024-02-0260si2mn spring steel60si2mn standard:gb/t 1222-2007
60si2mn characteristics and scope of application:It is a widely used silicon-manganese spring steel with slightly higher strength, elasticity and hardenability than 55si2mn. It is suitable for the production of flat springs with large loads or coil springs with a wire diameter of less than 30mm in the railway vehicle and automobile tractor industry, and is also suitable for the production of heat-resistant springs in non-corrosive media with a working temperature of less than 250 and large and important coiled springs that bear alternating loads and work under high stress.
60Si2mn Chemical Composition:Carbon C:
Silicon si:manganese mn:
Sulfur s:
Phosphorus p:
Chromium cr:
Nickel ni:
Copper cu:
60si2mn Delivery Status:Hot-rolled steel is delivered in heat-treated or non-heat-treated condition, and cold-drawn steel is delivered in heat-treated condition.
60si2mn Main Specifications:60Si2Mn round bar, 60Si2mn rolled bar, 60Si2mn cold drawn bar, 60Si2mn forging bar, 60Si2mn plate, 60Si2mn flat bar, 60Si2mn forging, 60si2mn forging ring, 60si2mn machining parts, 60si2mn pipe, 60si2mn forging cake.
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Anonymous users2024-02-01The annealing temperature of 60Si2Mn spring steel is between 770-790, the cooling rate is 30-50 hours, and the furnace is cooled to around 500 and the furnace is air-cooled.
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Anonymous users2024-01-31The hardness of 60Si2Mn quenching and heat return heat treatment can reach HRC58-60, the metallographic structure after heat treatment is tempered chrytonite, the quenching temperature of 60Si2Mn is 870 20, and the oil is cooled; The tempering temperature is 200 50 (30 if special required).
The process is as follows:
1. The 60Si2MN material is placed in a heat treatment furnace and heated at a temperature of 870.
2. Take it out after heating and holding it for 12min and quench it in oil.
3. After quenching, the sample is re-put into the heat treatment furnace and heated at a temperature of 200 °C.
4. Take out the material after heat preservation, air cooling and tempering, and pay attention to avoid the tempering brittle area of 300.
5. The 60si2mn cylindrical specimen after quenching + tempering treatment is polished under the grinder to make the surface of the specimen smooth.
6. Use a Rockwell hardness tester to measure the hardness value of the 60si2mn cylindrical sample of the beam spike, measure it three times and take the average value, and then the hardness of the material after heat treatment can be obtained.
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Anonymous users2024-01-3020crmnti steel is a medium-hardened carburizing steel, which is commonly used as a gear material in the machinery Kaizi industry. It is also sometimes used as quenched and tempered steel.
20crmnti has excellent process performance, high hardenability, hard and wear-resistant surface and tough core after carburizing and quenching, and has high low-temperature impact toughness, medium weldability, and good machinability after normalization. Due to the addition of titanium, it is less susceptible to overheating when heated. After carburizing, it can be directly quenched when it is not less than 800.
The deformation is also small after quenching.
Because it is a hardenable steel for socks, 20crmnti is generally used for medium-load wear parts, such as gearbox gears.
20Crmnti >> Composition Specification (GB T 3077-1999):
20CrMnTi>> Mechanical Properties:
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Anonymous users2024-01-2960Si2mn heat treatment methods include isothermal tempering and graded quenching, subthermal quenching and high temperature tempering, deformation heat treatment process methods. The use of this method can effectively improve the strength, toughness and service life of 60Si2Mn spring steel.
The heat treatment of 60Si2Mn spring steel includes isothermal tempering and grading quenching, subtemperature quenching and high temperature tempering, and deformation heat treatment. The use of this method can effectively improve the strength, toughness and service life of 60Si2Mn spring steel.
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Anonymous users2024-01-2860, T12 two types of steel tempering after quenching? Tempering structure and typical uses?
Steel small shaft: quenched and tempered after quenching, 550 650 tempered at high temperature to obtain tempered solitenite structure, hardness < 35HRC, so that the steel has high strength and good plasticity and toughness Steel spring:
After quenching, it is generally tempered at medium temperature, and the tempered tostenite structure is obtained after tempering at 350 450, with a hardness of 40 50HRC, which mainly ensures high yield strength and excellent elasticity under the premise of certain plasticity and toughness. 3. T12 steel file: low temperature tempering after quenching, tempered martensitic structure is obtained after tempering at 150 250, 60HRC, tool steel under the condition of maintaining high hardness, tempering is mainly to reduce brittleness and reduce residual internal stress.
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M42 is much more expensive, HRC66 or more, M2 is equivalent to 6542 in China and SKH51 in Japan. The heat treatment hardness is around 62.
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