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Vertical centrifugal casting method for tee

A technology of vertical centrifuge and vertical centrifuge, which is applied in the field of metal material casting

Inactive Publication Date: 2014-08-13
江苏双勤新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the centrifugal casting process is not a formalized process

Method used

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  • Vertical centrifugal casting method for tee
  • Vertical centrifugal casting method for tee
  • Vertical centrifugal casting method for tee

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Experimental program
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Embodiment 1

[0037] Embodiment 1 (the present invention)

[0038] Adopt the method for the vertical centrifugal casting tee disclosed by the present invention, specifically comprise the following steps:

[0039] (1) After preheating the mold to 320°C, assemble it on the flange of the vertical centrifuge, turn on the centrifuge, and control the speed at 300 r / min;

[0040] (2) Rapidly inject molten steel at a temperature of 1605°C into the mold, and within 15 seconds after sealing, increase the speed to 1200 r / min at a constant speed, and maintain the speed at this speed for 3 minutes;

[0041] (3) Reduce the speed to 500r / min at a constant speed within 10s, and keep it at this speed for 2 minutes;

[0042] (4) Increase the rotation speed to 1200 r / min at a constant speed within 10s again, and keep at this rotation speed for 20 minutes;

[0043] (5) Reduce the rotation speed to 500r / min at a constant speed within 30s, and keep at this speed for 10min; then reduce the speed at a uniform spee...

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PUM

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Abstract

The invention discloses a vertical centrifugal casting method for a tee. The process is simple and convenient to implement, less in material loss, low in workload, and high in product quality and performance. The prepared tee product is extremely excellent in high-temperature short-time mechanical property and high-temperature long-time mechanical property which are remarkably superior to those of a static cast, and obviously superior to those of a product obtained by a conventional centrifugal casting process.

Description

technical field [0001] The invention belongs to the field of metal material casting, and in particular relates to a high-temperature pressure part tee and a centrifugal casting method thereof. Background technique [0002] The tee is widely used in petrochemical industrial furnaces and is an important part for conveying high-temperature gas. The working condition is a high-temperature and pressurized state, so it is required to have good high-temperature short-term mechanical properties and high-temperature durable mechanical properties. The material is generally high-chromium-nickel alloy. [0003] At present, there are mainly three manufacturing methods for tees. The first is to use rough forgings for machining. This method can obtain products with good surface and internal quality, but the waste of materials is large and the manufacturing cost is too high; the second is to use integral static casting, because its structure and Due to the wall thickness, the casting stru...

Claims

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Application Information

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IPC IPC(8): B22D13/00
Inventor 李勤峰
Owner 江苏双勤新能源科技有限公司