Production method of phi 762 * 48 mm large-diameter nickel-based alloy seamless tube for oil refining device

A technology of nickel-based alloys and oil refining equipment, which is applied in the field of iron and steel metallurgy, can solve the problems of inability to produce large-diameter thick-walled nickel-based seamless steel pipes, and achieve the effects of batch production, stable product performance, and optimized process parameters
CN112453100AInactive Publication Date: 2021-03-09ZHONGXING ENERGY EQUIP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHONGXING ENERGY EQUIP
Publication Date
2021-03-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a production method of a phi 762*48 mm large-diameter nickel-based alloy seamless tube for an oil refining device. The method comprises the steps of electric furnace smelting,argon oxygen furnace refining, ingot casting, electroslag remelting, forging, tube blank machining, perforating, cold drawing and heat treatment. Technological parameters are optimized. The obtained phi 762 * 48 mm large-diameter nickel-based alloy seamless tube is pure in material, uniform in components, controllable in grain size and good in corrosion resistance, and the inspection result meetsthe technical requirement of the ASTM B423 standard. The product quality can be effectively guaranteed, the yield is high, batch production is facilitated, imported goods can be replaced by the phi 762 * 48 mm large-diameter nickel-based alloy seamless tube, and the use requirement of domestic large oil refining devices for large-diameter thick-wall nickel-based alloy seamless tubes is met.
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Description

technical field

[0001] The invention relates to the technical field of iron and steel metallurgy, in particular to a production method of a φ762×48mm large-diameter nickel-based alloy seamless pipe for an oil refinery. Background technique

[0002] The large-diameter alloy UNS NO8825 seamless pipe used in the process pipeline of the refinery hydrogenation unit is an important part in the process pipeline of the new generation of refinery hydrogenation unit. Its performance determines the acceptable quality of crude oil, the start-up time of the unit, and the maintenance of the unit cycle. The working environment of the pipeline is high-sulfur and high-acid, which is extremely corrosive. Therefore, pipelines with higher performance indicators, better safety, and longer design life are required. Previously, the pipe had been relying on imports. In China, cross-rolling perforation + cold rolling and cold drawing were used for trial production, but large-diameter thick-walled n...

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
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