Manufacture method of chemicals independent cargo hold in hull

Abstract

A manufacture method of a chemicals independent cargo hold in a hull is characterized by including the steps of designing drawing stock, and directly manufacturing stainless steel parts to be machined, in a manufacturer; scribing steel material, cutting and blanking; cold-machining the stainless steel parts; assembling and welding the stainless steel parts cold-machined; assembling and welding section by section; assembling an independent cargo hold; launching after pickling-passivation tightness test. The stainless steel parts are directly manufactured by the stainless steel manufacturer, so that expenditure on purchasing machining equipment is greatly saved, management cost is reduced, and construction period is short; in addition, the parts, in contact with liquid cargoes, of both side of the cargo hold are made of double-phase stainless steel, the part, in contact with the liquid cargoes, of one side of the cargo hold is made of stainless steel composite plates, and accordingly the cargo hold has high strength and corrosion resistance and the cost is saved; the process is reasonable, manufacture period is short, the cost is low, the manufactured independent cargo hold is high in strength, high in tightness and resistant to corrosion, and the needs for carrying high-corrosive chemicals are met.

Description

technical field [0001] The invention relates to the technical field of shipbuilding, in particular to a method for manufacturing an independent chemical cargo tank in a ship hull. Background technique [0002] Chemical tankers are special cargo tankers carrying various liquid chemicals such as ether, benzene, alcohol, acid, etc. Most of the liquid chemicals are highly toxic, flammable, volatile and highly corrosive, so chemical tankers are very important for fire protection. , explosion-proof, anti-virus and anti-corrosion have high requirements. With the rapid development of the economy and the increasing demand for chemical products, the world famous petrochemical groups BASF, Shell, and BP continue to conduct business in my country. In addition, EXXON MOBIL / ARMACO Group and Dow Chemical also conduct business in my country. Therefore, the demand for chemical transportation will rise rapidly in the future, and the demand for chemical tankers will be greater. [0003] Most...

AI Technical Summary

Problems solved by technology

[0003] Most of the early chemical tankers used special coating technology to protect the internal structural materials of the cargo tank. The cost of this cargo tank is relatively low, but the cargo tank special coating has always been unable to meet the requirements of some acid liquid cargoes, thus limiting the flexibility of loading , while the coating is easily damaged, and the coating blisters and rust spots occur from time to time, making the goods susceptible to contamination

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