Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of large thickness FH40 shipbuilding steel plate and its manufacturing method

A FH40, large-thickness technology, applied in the direction of manufacturing tools, temperature control, metal rolling, etc., can solve the problems of lack of experience in polar ship design and manufacturing, achieve high shape and grain size control, refine grain size, well-designed effects

Active Publication Date: 2022-07-22
ANGANG STEEL CO LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, my country lacks polar ship design and manufacturing experience, and there is a big gap compared with polar ship building powerhouses such as Finland, Japan, South Korea, the United States and Russia.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of large thickness FH40 shipbuilding steel plate and its manufacturing method
  • A kind of large thickness FH40 shipbuilding steel plate and its manufacturing method
  • A kind of large thickness FH40 shipbuilding steel plate and its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] Specific embodiments are described below in conjunction with the accompanying drawings:

[0035] It can be seen from the metallographic structure of Example 1 that the structure of the steel plate after the new TMCP process is basically ferrite + bainite structure, the original austenite of the steel plate and the structure of the finished steel plate have clear grain boundaries and very fine grains (among them, the austenite grain size is 10.0, and the ferrite grain size is 11.0), so as to achieve good low temperature aging impact toughness and high strength level of large thickness FH40 shipbuilding steel plate.

[0036] The chemical composition of the large-thickness FH40 shipbuilding steel plate with excellent aging impact toughness of the present invention is shown in Table 1, the billet smelting process parameters are shown in Table 2, the rolling method and cooling process of the steel plate are shown in Table 3, and the tensile and impact properties of the embodi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
yield strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a large-thickness FH40 shipbuilding steel plate with excellent aging impact toughness and a manufacturing method thereof. C: 0.07%~0.12%; Si: 0.05%~0.14%; Mn: 1.30%~1.60%; S: ≤0.002%; P: ≤0.008%; Als: 0.040%~0.055%; N: 0.003%~0.015 %; Nb: 0.01% to 0.05%; Ni: 0.25% to 0.55%; Ti: 0.008% to 0.014%; the balance is Fe and inevitable impurities. It can meet the technical requirements of marine steel plates in harsh and harsh environments.

Description

technical field [0001] The invention belongs to the field of steel material preparation, in particular to a large-thickness FH40 shipbuilding steel plate with excellent aging impact toughness and a manufacturing method thereof. Background technique [0002] Driven by the rapid growth of the shipbuilding industry in recent years, the demand for very low-quality ship steel has been rising rapidly year by year. However, my country lacks polar ship design and manufacturing experience, and there is a big gap compared with Finland, Japan, South Korea, the United States and Russia and other polar ship building powerhouses. In 2016, Guangzhou Shipbuilding International undertook the construction of the polar condensate tanker in the Yamal project in Russia. In 2017, CIMC Raffles, my country's largest offshore engineering company, undertook the construction of the "Viking Dragon" Arctic drilling platform ordered by Norway. Although Chinese shipbuilding enterprises have undertaken a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/06C22C38/08C22C38/12C22C38/14C21D6/00C21D8/02C21D9/00B21B1/38B21B37/58B21B37/74B21B45/00B21B45/02
CPCC22C38/02C22C38/04C22C38/06C22C38/12C22C38/08C22C38/14C21D6/001C21D6/005C21D6/008C21D8/0221C21D9/0081B21B1/38B21B37/74B21B37/58B21B45/004B21B45/0218C21D2211/005C21D2211/002B21B2001/386
Inventor 张鹏严玲王华韩鹏王东旭陈华李广龙王晓航李文斌齐祥羽
Owner ANGANG STEEL CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products