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Drawing production process of monel alloy pipe

A monel alloy and production process technology, which is applied to the coil drawing production process of monel alloy pipes and the field of pipe production technology, can solve the problems of high cost, many heat treatment times and low efficiency, and achieve the effect of avoiding oxidation.

Active Publication Date: 2014-05-28
江苏隆达超合金股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This production process is relatively mature in the production of Monel alloy pipes with an outer diameter of Ф20mm or more, but for Monel pipes with an outer diameter of Ф12mm or less due to the large number of rolling (or cold drawing) passes and the number of heat treatments, the rolling outer diameter of Ф20mm (especially Ф12mm), the mandrel is easy to be broken due to the small size of the mandrel and the mandrel, and the rolling output is very low. If cold drawing is used, due to the limitation of the length and speed of the pull car, the head of the head needs to be sawed and the yield of the product is low. At the same time, it is necessary to Multi-pass drawing results in low efficiency and high cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The disc drawing production process of Monel alloy pipe is as follows in parts by weight:

[0024] (1) Melting: Take 63.5 parts of nickel, 28 parts of copper, 1.5 parts of iron, 1 part of manganese, 0.5 parts of silicon, and 0.3 parts of carbon; put all the above raw materials into the vacuum induction melting furnace, and vacuumize to 1-100Pa; start vacuuming After 5 minutes, turn on the electricity until the raw materials are completely melted, and refine for 0.5 hours;

[0025] After 20 minutes of refining, add 0.05 part of nickel-magnesium alloy and fill it with rare gas for protection;

[0026] (2) Preparation of ingot: Sampling, determining the composition by direct reading spectrometer, so that the content of each composition is 63.5 parts of nickel, 28 parts of copper, 1.5 parts of iron, 1 part of manganese, 0.5 parts of silicon, 0.3 parts of carbon, and 0.01 parts of magnesium Then carry out casting, the ingot mold is split, and after the casting is completed,...

Embodiment 2

[0040] The disc drawing production process of Monel alloy pipe is as follows in parts by weight:

[0041] (1) Smelting: Take 68.5 parts of nickel, 34 parts of copper, 2 parts of iron, 1.5 parts of manganese, 1 part of silicon, and 0.8 parts of carbon; put all the above-mentioned raw materials into the vacuum induction melting furnace, and vacuumize to 1-100Pa; start vacuuming After 10 minutes, turn on the electricity until the raw materials are completely melted, and refine for 2 hours;

[0042] After 20 minutes of refining, add 0.1 part of nickel-magnesium alloy and fill it with rare gas for protection;

[0043] (2) Preparation of ingot: Sampling, determining the composition by direct reading spectrometer, so that the content of each composition is 63.6 parts of nickel, 34 parts of copper, 2 parts of iron, 1.5 parts of manganese, 1 part of silicon, 0.8 parts of carbon, and 0.03 parts of magnesium Then carry out casting, the ingot mold is split, and after the casting is compl...

Embodiment 3

[0056] The disc drawing production process of Monel alloy pipe is as follows in parts by weight:

[0057] (1) Melting: Take 67.5 parts of nickel, 31 parts of copper, 1.9 parts of iron, 1.1 parts of manganese, 0.7 parts of silicon, and 0.4 parts of carbon; put all the above raw materials into the vacuum induction melting furnace, and vacuumize to 1-100Pa; start vacuuming After 8 minutes, turn on the electricity until the raw materials are completely melted, and refine for 1 hour;

[0058] After 20 minutes of refining, add 0.08 parts of nickel-magnesium alloy and fill it with rare gas for protection;

[0059] (2) Preparation of ingot: Sampling, determining the composition by direct-reading spectrometer, so that the content of each composition is 63.6 parts of nickel, 31 parts of copper, 1.9 parts of iron, 1.1 parts of manganese, 0.7 parts of silicon, 0.4 parts of carbon, and 0.02 parts of magnesium. Then carry out casting, the ingot mold is split, and after the casting is compl...

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Abstract

The invention relates to a drawing production process of a monel alloy pipe, particularly a production process for pipes with an outer diameter smaller than [Phi]12 mm, and belongs to the field of alloy pipe preparation technology. The process comprises the steps of performing vacuum melting, performing peeling extrusion, grinding, cold rolling, rolling, drawing to a finished product, carrying out on-line detection of faults, sizing on a drawing straightening machine, carrying out pressure tests, annealing, detecting and storing. On basis of a conventional process, the drawing production process takes use of a drawing technology, and has high yield and high efficiency.

Description

technical field [0001] The invention relates to a coil-drawing production process of a Monel alloy pipe, which is mainly aimed at the production process of a pipe with an outer diameter below Ф12 mm, and belongs to the technical field of alloy pipe preparation. Background technique [0002] Due to its excellent corrosion resistance, Monel alloy has good corrosion resistance in various media, good welding performance, and high strength. This alloy has been widely used in many occasions. It has excellent corrosion resistance in salt water or seawater. Capability of pitting corrosion and stress corrosion. Especially resistance to hydrofluoric acid and hydrochloric acid. It is widely used in important fields such as chemical industry, petroleum and marine industry. At present, the production rate of monel alloy pipes below Ф12mm is low, the efficiency is poor, and the cycle is long. [0003] The traditional production process is: vacuum casting-skin peeling-forging piercing-gri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C37/06B21C23/00B21D3/00C22C19/03
Inventor 周向东浦益龙
Owner 江苏隆达超合金股份有限公司
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