Manufacturing method of UNSNO6025 pipe

A manufacturing method, centrifugal casting technology, which is applied in the field of alloy materials, can solve problems such as difficult forming and poor fluidity of alloy liquid, and achieve the effects of saving import costs, saving procurement cycle, excellent appearance and mechanical properties

Inactive Publication Date: 2018-06-29
李泳澎
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for UNS NO6025 alloy, the alloy liquid has poor fluidity and is not easy to form, so it is difficult to manufacture high-quality products by centrifugal casting process
There is no report about the centrifugal casting technology of UNS NO6025 alloy

Method used

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  • Manufacturing method of UNSNO6025 pipe
  • Manufacturing method of UNSNO6025 pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0025] Preparation of UNS NO6025 Alloy Tube with Specification φ273 / φ193

[0026] (1) Using metal chromium, metal nickel, Q235 steel, ferrosilicon and ferromanganese as raw materials, carry out weighing and proportioning according to ASME SB564 UNS NO6025 standard ratio for standby;

[0027] (2) Bake the raw material and the metal mold cylinder for centrifugal casting at 250°C for 35 minutes; among them, the riding angle of the mold cylinder is 92°, the inner hole size is φ277mm, and the inner wall of the mold cylinder is pre-sprayed with uniform, thick 0.8 mm of a coating consisting of 30 wt% diatomaceous earth, 15 wt% microsilica, 5.0 wt% sodium bentonite and 50 wt% water.

[0028] (3) Metal nickel, metal chromium and Q235B steel are melted in an intermediate frequency electric furnace, and when the temperature reaches 1662°C, they are released from the furnace, and ferrosilicon and ferromanganese are added to obtain an alloy liquid.

[0029] (4) When the temperature of the...

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Abstract

The invention relates to a centrifugal casting technology of a UNSNO6025 alloy pipe. With metal chromium, metal nickel, Q235 steel, ferrosilicon, ferromanganese and the like being raw materials, through reasonable selection of technological conditions and parameters, by means of the method, a high-quality UNS NO6025 alloy pipe can be prepared and has a superior profile and mechanical performance,a UNS NO6025 rolling pipe on the current market can be replaced, the product import cost and procurement cycle can be greatly saved, and application and popularization of the UNS NO6025 alloy pipe arefacilitated.

Description

technical field [0001] The invention belongs to the technical field of alloy materials, and in particular relates to a centrifugal casting method for UNS NO6025 alloy pipes. Background technique [0002] UNS NO6025 alloy is a typical nickel-based alloy, which has good high temperature corrosion resistance and oxidation resistance, excellent cold and hot processing and welding performance, and is widely used in titanium dioxide, petrochemical, nuclear power and other fields. However, due to its alloy material characteristics, UNS NO6025 alloy pipe can only be processed by rolling process at this stage. At present, UNS NO6025 alloy pipes with excellent materials mainly come from imports, which are expensive and have a long procurement cycle. These factors have seriously affected the promotion and application of UNS NO6025 alloy pipes. [0003] Centrifugal casting is a casting method in which liquid metal is poured into a high-speed rotating mold cylinder, and the mold cylinde...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D13/02C22C1/03C22C19/05
CPCB22D13/02C22C1/023C22C1/03C22C19/05
Inventor 李泳澎
Owner 李泳澎
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