A steel plate for load-bearing shelves and its processing technology

A processing technology and steel plate technology, applied in the field of steel plate and its processing technology, can solve the problems of broken storage equipment, increased storage costs, low-temperature toughness of steel plate, etc.

Inactive Publication Date: 2016-08-31
SUZHOU JIN YUAN OIL MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially when it is used to store a high-weight cargo, the storage equipment often breaks in a short time due to insufficient transverse yield strength of the steel plate, which increases storage costs; and in some cold regions, the low-temperature toughness of the steel plate bearing the load on the shelf It is not high, and it often causes the storage equipment to break in a short time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] This embodiment is a steel plate used for load-bearing shelves. The composition and mass percentage of the steel plate are: C: 0.37%, Mn: 0.41%, Si: 0.057%, P: 0.0068%, S: 0.002%, Nb: 0.09 %, V: 0.04%, Ti: 0.7%, Al: 0.05%, N: 0.006%, H: 0.00020%, Cu: 0.17%, Cr: 1.7%, Mo: 0.33%, Lanthanum: 0.02%, Ce: 0.01 %, praseodymium: 0.05%, the balance is Fe and unavoidable impurities; the first phase in the steel plate is ferrite, the second phase is pearlite, and the volume percentage of the second phase from the surface to 1 / 4 thickness is 3.5 %, the volume percentage of the second phase from 1 / 4 thickness to the center is 6.0%, and there is no band structure; the average grain diameter of ferrite from the surface to 1 / 4 thickness of the steel plate is 4.5 μm, and the average diameter of pearlite clusters is 5.02μm, the average grain diameter of ferrite from 1 / 4 thickness to the center is 4.0μm, and the average diameter of pearlite group is 6.0μm.

[0045] The processing technol...

Embodiment 2

[0053] This embodiment is a steel plate used for load-bearing shelves. The composition and mass percentage of the steel plate are: C: 0.38%, Mn: 0.42%, Si: 0.067%, P: 0.007%, S: 0.003%, Nb: 0.1 %, V: 0.05%, Ti: 0.8%, Al: 0.06%, N: 0.001%, H: 0.000120%, Cu: 0.18%, Cr: 1.8%, Mo: 0.34%, Lanthanum: 0.03%, Ce: 0.02 %, praseodymium: 0.06%, the balance is Fe and unavoidable impurities; the first phase in the steel plate is ferrite, the second phase is pearlite, and the volume percentage of the second phase from the surface to 1 / 4 thickness is 3.7 %, the volume percentage of the second phase from 1 / 4 thickness to the center is 6.12%, and there is no band structure; the average grain diameter of ferrite from the surface to 1 / 4 thickness of the steel plate is 4.6 μm, and the average diameter of pearlite clusters is 5.1 μm, the average grain diameter of ferrite from 1 / 4 thickness to the center is 4.1 μm, and the average diameter of pearlite group is 6.1 μm.

[0054] The processing techn...

Embodiment 3

[0062] This embodiment is a steel plate used for load-bearing shelves. The composition and mass percentage of the steel plate are: C: 0.39%, Mn: 0.43%, Si: 0.07%, P: 0.008%, S: 0.004%, Nb: 0.11 %, V: 0.06%, Ti: 0.9%, Al: 0.07%, N: 0.002%, H: 0.0001%, Cu: 0.19%, Cr: 1.9%, Mo: 0.35%, Lanthanum: 0.04%, Ce: 0.02 %, praseodymium: 0.07%, the balance is Fe and unavoidable impurities; the first phase in the steel plate is ferrite, the second phase is pearlite, and the volume percentage of the second phase from the surface to 1 / 4 thickness is 3.8 %, the volume percentage of the second phase from 1 / 4 thickness to the center is 6.2%, and there is no band structure; the average grain diameter of ferrite from the surface to 1 / 4 thickness of the steel plate is 4.7 μm, and the average diameter of pearlite clusters is 5.2μm, the average grain diameter of ferrite from 1 / 4 thickness to the center is 4.2μm, and the average diameter of pearlite group is 6.2μm.

[0063] The processing technology ...

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Abstract

The invention provides a steel plate for a storage rack to bear load. The steel plate is prepared from such components as 0.37-0.39% of C, 0.41-0.43% of Mn, 0.05-0.07% of Si, 0.006-0.008% of P, 0.002-0.004% of S, 0.09-0.11% of Nb, 0.04-0.06% of V, 0.7-0.9% of Ti, 0.05-0.07% of Al, less than or equal to 0.006% of N, less than or equal to 0.00020% of H, 0.17-0.19% of Cu, 1.7-1.9% of Cr, 0.33-0.35% of Mo, 0.02-0.04% of lanthanum, 0.01-0.02% of cerium, 0.05-0.07% of praseodymium, and the balance of Fe and inevitable impurities. The transverse yield strength of the steel plate is greater than or equal to 220MPa; and the steel plate is high in ductility and excellent in low-temperature toughness.

Description

technical field [0001] The invention relates to a steel plate and a processing technology thereof, in particular to a steel plate used for load-bearing shelves and a processing technology thereof. Background technique [0002] Storage equipment refers to technical devices and tools that can meet the needs of storage and storage of goods. Storage equipment is the main symbol of the level of storage and logistics technology. Modern storage equipment reflects the development of modern storage and logistics technology. Shelves in storage equipment are relatively commonly used equipment. Due to the storage needs of special materials, the use conditions and environment of shelves are becoming more and more harsh, and the thickness of steel plates is required to be thicker and thicker. Correspondingly, the technology of steel plates used in storage equipment The requirements are also constantly increasing. Especially when it is used to store a high-weight cargo, the storage equipm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/28B23P15/00
Inventor 李琪
Owner SUZHOU JIN YUAN OIL MACHINERY
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