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Powder metallurgy brass-based etching material with anti-paraffin-precipitation function and preparation method thereof

A powder metallurgy and base material technology, applied in the field of brass-based etching materials and their preparation, can solve the problems of difficult implementation, long production cycle and high cost of complex anti-waxing parts, and achieve good anti-waxing effect.

Inactive Publication Date: 2015-11-11
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still various problems in these methods, such as high cost, difficult implementation, and the need for regular shutdown processing, etc.
And using conventional methods to prepare complex anti-wax parts has a long production cycle and high cost

Method used

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  • Powder metallurgy brass-based etching material with anti-paraffin-precipitation function and preparation method thereof
  • Powder metallurgy brass-based etching material with anti-paraffin-precipitation function and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A powder metallurgy brass-based etching material with anti-wax function and a preparation method thereof, comprising the following steps:

[0015] The first step, the preparation of powder metallurgy brass:

[0016] (1) Ball milling and mixing: mix the pre-alloyed powder with alloy components of Cu80wt%, Zn20wt% and 0.6wt% zinc stearate, and use QM-3A high-energy pendulum ball mill to mix the powder to make the raw material powder components homogeneous and fine particles.

[0017] (2) Compacting compact: adopt SJY50-150T manual isostatic press to compact compact, and the compacting pressure is 800MPa.

[0018] (3) Sintering: The sintering route is as follows: first, heat up to 640°C at a rate of 10°C / min, hold for 40 minutes, then slow down the heating rate to 5°C / min, rise to a sintering temperature of 880°C, and sinter for 60 minutes. The sintering atmosphere is decomposed ammonia. During sintering, in order to reduce the loss of zinc, prevent the compact from bei...

Embodiment 2

[0026] The alloy composition described in this example is 72wt% Cu, 18wt% Zn, 10wt% Ni. All the other preparation processes are the same as in Example 1. The surface was tested for anti-wax deposition, and the amount of wax deposition per unit area was 3.18mg / cm 2 .

Embodiment 3

[0028] In this embodiment, the pressing pressure for preparing powder metallurgy brass is 320 MPa, the sintering temperature is 840° C., and no etching treatment is performed. The surface was tested for anti-wax deposition, and the amount of wax deposition per unit area was 8.31mg / cm 2 .

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Abstract

The invention discloses a powder metallurgy brass-based etching material with an anti-paraffin-precipitation function and a preparation method thereof. The powder metallurgy brass-based etching material with the anti-paraffin-precipitation function and the preparation method thereof are characterized in that the preparation method includes the steps that firstly, a brass-based material is prepared through the powder metallurgy method; and secondly, the brass-based material is etched through a ferric trichloride solution. A stable water film is formed on the brass-based etched surface in a water-oil-solid system to isolate contact of the oil and the surface, and accordingly paraffin in oil can not be attached to the surface of solid easily. The anti-paraffin-precipitation performance is excellent, and the powder metallurgy brass-based etching material with the anti-paraffin-precipitation function and the preparation method provide supports for developing powder metallurgy anti-paraffin-precipitation devices of complex structures.

Description

technical field [0001] The invention relates to a metal functional material, in particular to a brass-based etching material with an anti-wax function and a preparation method thereof. Background technique [0002] Waxing during crude oil transportation has brought huge losses to the petroleum industry. The wax removal and prevention measures currently used mainly include: mechanical wax removal, thermal wax removal, wax removal agent wax removal, magnetic wax removal, biological wax removal, and alloy device wax removal. However, there are still various problems in these methods, such as high cost, difficult implementation, and the need to stop production regularly. Moreover, the conventional method for preparing complex anti-wax parts has a long production cycle and high cost. Contents of the invention [0003] In order to overcome the shortcomings of the prior art above, the present invention provides a powder metallurgy brass-based etching material with anti-wax func...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/04C22C1/04C23F1/18
Inventor 刘琳刘成臣李海周
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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