Research on Surface Cracks of CCSD36 Ship Plate Steel

Wang Shuoming; Liu Qinggang; Li Xiuqing; Gao Ju; Zhang Caijun

Volume 30 Issue 4

Oct. 2009

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Wang Shuoming, Liu Qinggang, Li Xiuqing, Gao Ju, Zhang Caijun. Research on Surface Cracks of CCSD36 Ship Plate Steel[J]. IRON STEEL VANADIUM TITANIUM, 2009, 30(4): 45-48.

Citation:

Wang Shuoming, Liu Qinggang, Li Xiuqing, Gao Ju, Zhang Caijun. Research on Surface Cracks of CCSD36 Ship Plate Steel[J]. IRON STEEL VANADIUM TITANIUM, 2009, 30(4): 45-48.

Wang Shuoming, Liu Qinggang, Li Xiuqing, Gao Ju, Zhang Caijun. Research on Surface Cracks of CCSD36 Ship Plate Steel[J]. IRON STEEL VANADIUM TITANIUM, 2009, 30(4): 45-48.

Citation:

Wang Shuoming, Liu Qinggang, Li Xiuqing, Gao Ju, Zhang Caijun. Research on Surface Cracks of CCSD36 Ship Plate Steel[J]. IRON STEEL VANADIUM TITANIUM, 2009, 30(4): 45-48.

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Research on Surface Cracks of CCSD36 Ship Plate Steel

1. College of Metallurgy and Energy, Hebei Polytechnic University, Tangshan 063009, Hebei, China;
2. Tangshan Medium Heavy Plate Co., Ltd., Tangshan 063000, Hebei, China

Received Date: 2009-06-25
Available Online: 2023-12-05

Abstract

Abstract

The reason of cracks was studied by analyzing the surface crack of slabs and experimental research in this dissertation.Result shows: surface cracks on CCSD36 steel mainly result from the original slab cracks.It originates in mold and extends in secondary cooling zone and rolling.Oxidation layer along the cracks formed in high temperature makes cracks hard to be welded.A large amount of inclusions with high melting point and low plasticity,such as silicates,exist inside and around the cracks,the content of which is deviated from the normal state seriously,and brittle particles are formed.When they are captured by exterior and oxidation layer,the surface will break during being rolled,so the cracks extend or newly formed.
- medium heavy plate,
- crack,
- inclusion,
- electrolysis method,
- tracer method

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