09mnnidr is a kind of steel plate for cryogenic pressure vessels, which is widely used in equipment manufacturing in petroleum, chemical and other fields. It has excellent low-temperature performance and processability, and can meet the needs of container manufacturing with various complex shapes. This article will introduce the introduction, application scope, delivery status and origin of 09mnnidr steel plate in detail.
1. Introduction. 09mnnidr is a kind of steel plate for cryogenic pressure vessels, where "09mnni" indicates the chemical composition of steel, "d" represents the first letter of low pinyin, and "r" represents the first letter of rong pinyin. This kind of steel plate has excellent low-temperature toughness and processability, and is widely used in the manufacture of various low-temperature pressure vessels.
Second, the scope of application.
09mnnidr steel plate is mainly used in the following fields:
1.Petroleum and chemical equipment de-ethanization towers, CO2 absorption towers, medium-pressure flash towers, coolers, etc.;
2.De-ethanization towers, reabsorption towers, compressor casings, etc.;
3.propane cryogenic storage tank manufacturing, etc.
These applications require high low-temperature toughness and processability of steel plates, and 09mnnidr steel plate can meet these requirements and become an indispensable material in these fields.
3. Delivery status.
The delivery state of 09mnnidr steel plate is generally normalized or normalized + tempered, quenched + tempered -70 degree low temperature impact. This treatment method can ensure that the steel plate has good toughness and processing performance, and at the same time meet the needs of different users.
Fourth, the place of origin. 09mnnidr steel plate is mainly produced in Wugang, Xianggang, Xingang, Wuhan Iron and Steel, Heavy Steel, Nangang, Jinan Iron and Steel and other places. These manufacturers strictly control the quality in the production process to ensure that the performance indicators of the steel plate meet the standard requirements, and provide reliable raw materials for users at home and abroad.
In a word, 09mnnidr steel plate, as an excellent steel plate for low-temperature pressure vessels, has a wide range of application fields and good processing performance. Its emergence has provided strong support for equipment manufacturing in the fields of petroleum and chemical industry, and promoted the development of these industries. In the future, with the continuous progress of technology and the continuous improvement of application demand, the application prospect of 09mnnidr steel plate will be broader.
Mechanical properties: grade: delivery condition: steel plate thickness mm, tensile test, impact test, bending test, tensile strength, rm, mpa, yield strength, elongation, a %, temperature, v-type impact energy: 180 °, not less than, not less than b=2a09mnnidr, normalizing or normalizing, plus tempering, 6 16440, 57030023-7034d=2a>16, 36430, 560280>36, 60430, 560270>60, 120420, 550260, steel ultrasonic inspection standard, according to GB T2970 or JB T47303. Execution, inspection standards and qualification levels are indicated in the contract.
The content range of the national standard for spot implementation is as described in the table above. **The contract can control the chemical element content according to the design requirements. Mechanical properties: grade: delivery condition: steel plate thickness mm, tensile test, impact test, bending test, tensile strength, rm, mpa, yield strength, elongation, a %, temperature, v-type impact energy: 180 °, not less than, not less than b=2a09mnnidr, normalizing or normalizing, plus tempering, 6 16440, 57030023-7034d=2a>16, 36430, 560280>36, 60430, 560270>60, 120420, 550260, steel ultrasonic inspection standard, according to GB T2970 or JB T47303. Execution, inspection standards and qualification levels are indicated in the contract.
The surface of the steel plate is not allowed to have defects that are harmful to use, such as cracks, bubbles, folding, and inclusions. There should be no delamination of the steel plates. Steel plate acceptance in batches, each batch of steel plate by the same grade, the same furnace number, the same thickness, the same heat treatment system, each batch weight is not more than 30t, a single weight of more than 30t steel plate according to the group batch. According to the customer's requirements, the thickness of the steel plate greater than 16mm can be heat treated by the sheet for mechanical property inspection. The sampling position of mechanical properties is according to the provisions of GB T2975, and the axis of the impact sample should be located at a quarter of the thickness of the steel plate with a thickness greater than 40mm. The packaging, marking and quality certificate of steel plate shall comply with the provisions of GB T247.