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Carburizing and quenching process for engine cylinder block

An engine block, carburizing and quenching technology, applied in metal material coating process, manufacturing tools, coatings, etc., can solve the problems of quenching furnace shaking, quenching furnace damage, quenching furnace collision, etc., to achieve convenient maintenance, integrity Guarantee and improve the effect of protection

Pending Publication Date: 2020-10-27
陈振
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The heat treatment carburizing quenching furnace needs to protect the quenching furnace during transportation, and it is inevitable that bumps will occur during transportation. In this case, it is easy to cause the quenching furnace to shake, causing the quenching furnace to collide with other items, resulting in the quenching furnace Damage occurs, and at the same time during the transportation process, the staff need to check and inspect the quenching furnace regularly, and there is a protective device on the outside of the quenching furnace, which hinders the detection of the quenching furnace by the staff

Method used

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  • Carburizing and quenching process for engine cylinder block
  • Carburizing and quenching process for engine cylinder block
  • Carburizing and quenching process for engine cylinder block

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Embodiment Construction

[0027] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0028] Such as Figure 1-Figure 6 Shown, a kind of engine block carburizing and quenching process of the present invention, this process comprises the steps:

[0029] S1: Put the machined engine block into the quenching furnace body 5 to raise the temperature. When the temperature rises to 650°C, methanol is introduced into it; The furnace body 5 is loaded into the protection box 1;

[0030] S2: After step S1 is completed, increase the carbon potential in the quenching furnace body 5 to 1.15%, and at the same time, feed ammonia gas with a flow rate of 1.12-1.85 L / min into the quenching furnace body 5, and keep the furnace temperature at 850-870°C , and the holding time is 350 minutes;

[0031] S3: After the step S2 is completed, heat-insulate t...

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Abstract

The invention relates to the field of carburizing and quenching, in particular to a carburizing and quenching process for an engine cylinder block. According to the carburizing and quenching process,a protection box, a base storage device, a movable plate, a quenching furnace body and a waist locating device are included. The protection box is internally provided with a storage cavity for storingthe quenching furnace body. The movable plate is movably connected to the bottom of the inner wall of the storage cavity. The base storage device is fixedly mounted at the top of the movable plate. According to the carburizing and quenching process for the engine cylinder block, the bottom and waist side of the quenching furnace body can be fixed through the base storage device and the waist locating device correspondingly, and the effect that the quenching furnace body is located and clamped is achieved; when being encountered with a bumpy road, a quenching furnace can only shake slightly, and thus, the quenching furnace is protected in the transport process; the problem that the quenching furnace is broken due to severe shake is avoided; and completeness of the quenching furnace is guaranteed.

Description

technical field [0001] The invention relates to the field of carburizing and quenching, in particular to an engine cylinder body carburizing and quenching process. Background technique [0002] Carburizing and quenching is a common heat treatment process for metal materials. It can make the surface of the carburized workpiece obtain high hardness and improve its wear resistance. Traditional processes mainly include: low-temperature tempering, pre-cooling direct quenching, primary heating and quenching, carburizing high-temperature tempering, secondary quenching cold treatment, induction heating after carburizing, etc. The quenching process is widely used in the modern machinery manufacturing industry. The important parts in machinery, especially the steel parts used in automobiles, airplanes and rockets, are almost all quenched. In order to meet the technical requirements of various parts, various quenching processes have been developed. [0003] The heat treatment carburi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C8/22C23C8/80C23F17/00C21D9/00
CPCC23C8/22C23C8/80C23F17/00C21D9/0062C21D9/0068
Inventor 陈振孙亮孔玉
Owner 陈振
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