What is the difference between heat treatment oil cooling and oil quenching?

Heat treatment is only available in quenching.

Oil cooling is used, so oil cooling and oil quenching for heat treatment are the same thing.

Quenching: Refers to the heating of steel to AC3 or AC1 (the lower critical point of steel.

temperature) above a certain temperature, hold for a certain period of time, and then at an appropriate cooling rate, martensite is obtained.

or bainite. Heat treatment process of tissues.

Common quenching processes include single-medium quenching, dual-media quenching, martensitic classification quenching, bainite isothermal quenching, surface quenching and local quenching. The purpose of quenching: to obtain the required martensitic structure of the steel, to improve the hardness, strength and wear resistance of the workpiece, and to prepare the structure for the subsequent heat treatment.

Oil quenching: To know what oil quenching is, you should first know what quenching is. Quenching treatment mainly refers to the removal of steel from high-temperature austenite.

The zone is rapidly cooled down to obtain a specific cryogenic tissue, such as martensite, bainite, etc. Water, oil or low-temperature salt baths are commonly used for this cooling, but sometimes fans can be used to accelerate air cooling to achieve the same purpose. Among them, the use of oil to cool is called oil quenching.

Zouweqij, I don't agree with you.

Oil quenching refers to quenching with oil, and it is true.

However, the concept of oil cooling does not only refer to the use of oil cooling after tempering.

Oil cooling = the use of oil for rapid cooling, no one should object to this, quenching is the use of quenching medium cooling, usually for the quenching of the workpiece, we verbally say oil cooling or water cooling refers to the quenching medium, not specifically refers to the cooling of tempering.

I agree with KDL1588N's statement that oil cooling and oil quenching are the same thing, the key is to understand what the two are about, and figure out the concepts of quenching, tempering, etc. As for saying that "heat treatment will only be cooled by oil during quenching", that is also incorrect, and Zouweij also mentioned that tempering can also be cooled with oil.

Oil quenching is used for quenching, which is prone to cracks, which means that the cooling rate is slower, which is the same as oil cooling, but oil cooling can also be used for tempering, so there is still a certain difference.

The people upstairs don't mislead people and talk nonsense.

Oil quenching refers to quenching with oil.

Oil cooling usually refers to some parts containing alloying elements, in order to avoid tempering brittleness, after tempering, the parts are put into oil for quick cooling.

Uses: Water quenching cools quickly, stresses greatly, and tends to deform and crack, and is generally used for hardenability.

Poor carbon steel. The oil quenching cooling effect is mild, and it is generally used for alloy steels with good hardenability.

Quenching agent: Nianyin water quenching is to quench water with water as quenching agent, and oil quenching is to use oil as quenching agent. Cooling time: Because the cooling rate of oil is slow, the cooling time of oil quenching is longer than that of water quenching. <

1. Uses: Water quenching and cooling are fast, the stress is large, and the tendency of deformation and cracking is also large, and it is generally used for carbon steel with poor hardenability. The oil quenching cooling effect is mild, and it is generally used for alloy steels with good hardenability.

2. Quenching agent: water quenching is to quench water with water as quenching agent, and oil quenching is to use oil as quenching agent.

Water quenching. The difference between oil quenching and oil quenching: different cooling effect, hardenability.

Different. The cooling of water quenching is relatively fast, while the cooling of oil quenching is mild; Water quenching has poor hardenability, whereas oil quenching has poor hardenability. Water quenching is the quenching carried out by water as the quenching agent, called water quenching, which has the advantage of cooling faster in the high temperature area, and the disadvantage is that the cooling is faster in the low temperature area, which is easy to cause large sensitive weaving stress in the rock formation.

Water quenching is to put a high-temperature object into the water, then burn it red-hot, and put it into the water again, and so on, so that the rigidity can be improved.

Fire quenching refers to flame quenching, which is to combine a kind of acetylene.

Oxygen flame or gas-oxygen flame is a surface quenching method that rapidly heats the surface of the workpiece, and then sprays liquid to cool it, which is generally commonly used acetylene-or jujube mold oxygen flame surface quenching. With the development of technology, people have been able to manufacture and design crankshafts for hardening.

A special quenching machine for the curved surface of gears and other parts, thus expanding the scope of use of flame quenching.

Summary. Cryogenic heat treatment usually refers to the heating and cooling of parts at high temperatures for multiple times to achieve the purpose of improving the performance of parts. This method is often used to manufacture complex parts such as superalloys and titanium alloys.

Cryogenic heat treatment can make the structure of the part more uniform and refined, thereby improving its performance. Oil-cooled quenching and cryogenic heat treatment are two different methods of heat treatment of parts, and while they can both improve the hardness and wear resistance of parts, their treatment methods and purposes.

Oil-cooled quenching is a surface hardening method that is often used to improve the hardness and wear resistance of parts. This method is to quench the parts in hot oil to achieve rapid cooling. The slag is wider than the hot oil to transfer heat to the surface of the part, so the surface of the part can be cooled quickly, while the interior remains at a higher temperature, resulting in a uniform surface quenching structure.

Can you elaborate on that a little bit more?

Cryogenic heat treatment usually refers to the heating and cooling of parts at high temperatures for multiple times to achieve the purpose of improving the performance of parts. This method is often used to manufacture complex parts such as superalloys and titanium alloys. Cryogenic heat treatment can improve the performance of parts by making the structure more uniform and refined.

Oil-cooled quenching and cryogenic heat treatment are two different methods of heat treatment of parts, although they and socks can improve the hardness and wear resistance of parts, but their treatment methods and purposes.

Summary. Oil-cooled quenching is a commonly used heat treatment method that makes materials hard and brittle, and improves their strength, plasticity, and toughness. Oil-cold quenching is often classified as a quenching heat treatment method, which includes water quenching, salt quenching, and gas quenching.

Quenching is the method of heating a material to a certain temperature (usually above the critical point of the material) and then rapidly cooling (quenching) to change its structure, properties, and appearance. In oil-cooled quenching, the heated material is usually first placed in a high-temperature oil and then quickly cooled by the oil to achieve the desired effect. During the whole process, the temperature of the surface of the material is drastically reduced, thus preventing some chemical phenomena in the material.

Therefore, oil-cooled quenching is a kind of quenching heat treatment method, rather than cryogenic heat treatment method.

Oil-cooled quenching is a commonly used heat treatment method that can make materials hard and brittle, and improve their strength, plasticity and toughness. Oil-cold quenching is often classified as a quenching heat treatment method, which includes water quenching, salt quenching, and gas quenching. Quenching is the method of heating a material to a certain temperature (usually above the critical point of the material) and then rapidly cooling it (key quenching) to change its structure, properties, and appearance.

In oil-cooled quenching, the heated material is usually first placed in a high-temperature oil and then quickly cooled by the oil to achieve the desired effect. During the whole process, the temperature of the surface of the material is drastically reduced, thus preventing some chemical phenomena in the material. Therefore, oil-cooled quenching is a kind of quenching heat treatment method, rather than cryogenic heat treatment method.

You've done a great job! Can you elaborate on that?

Oil-cooled quenching is a commonly used heat treatment method that can make materials hard and brittle, and improve their strength, plasticity and toughness. Oil-cold quenching is often classified as a quenching heat treatment method, which includes water quenching, salt quenching, and gas quenching. Quenching is the method of heating a material to a certain temperature (usually above the critical point of the material) and then rapidly cooling it (key quenching) to change its structure, properties, and appearance.

In oil-cooled quenching, the heated material is usually first placed in a high-temperature oil and then quickly cooled by the oil to achieve the desired effect. During the whole process, the temperature of the surface of the material is drastically reduced, thus preventing some chemical phenomena in the material. Therefore, oil-cooled quenching is a kind of quenching heat treatment method, rather than cryogenic heat treatment method.

Water quenching cools quickly, but the stress is large, and the deformation and cracking tendency are large, and it is generally used for carbon steel with poor hardenability.

Oil quenching has a mild cooling effect and is generally used for alloy steels with good hardenability.