The production process of hni65-5 nickel brass tube with heavy plate

A production process, nickel brass technology, applied in the field of metal rolling, can solve problems such as pipe cracking, drawn coil annealing, etc., and achieve the effect of simple manufacturing process, smooth surface and uniform pitch

Active Publication Date: 2019-09-20
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

[0006] The purpose of the present invention is to overcome the deficiencies in the prior art, thereby providing a production process for heavy HNi65-5 nickel brass tubes, which solves the problems of pipe cracking and pulling when the planetary rolling mill rolls HNi65-5 nickel brass tubes. Difficulties such as recrystallization annealing of coiled tubes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] For example: the finished product outer diameter Φ19mm, wall thickness 1mm, the production process of HNi65-5 nickel brass coil tube in the annealed soft state includes the following steps:

[0027] (1) Preparation of hollow ingot: According to the mass ratio of electrolytic copper: electrolytic nickel: zinc ingot is 64.5:30:5.5, according to this ratio, put it into the melting furnace for melting at 1130℃±20℃, refining for 15min, and then continuously casting the outer diameter The hollow ingot is Φ90mm, the inner hole is Φ40mm, and the weight of a single ingot is 300kg;

[0028] (2) Preparation of coil: Step (1) Prepare the hollow ingot on the surface milling machine to mill the outer single side of 0.5mm, and carry out planetary rolling to form a completely recrystallized state with an outer diameter of Φ48mm and a wall thickness of 2.2mm. The pipe is wound into a Φ2000mm HNi65-5 nickel brass coil, the planetary rolling temperature is controlled at 780±20°C, the cool...

Embodiment 2

[0034] For example: the finished product outer diameter Φ16mm, wall thickness 1.2mm, the production process of HNi65-5 nickel brass coil tube in the annealed soft state includes the following steps:

[0035] (1) Preparation of hollow ingot: According to the mass ratio of electrolytic copper: electrolytic nickel: zinc ingot is 64.5:30:5.5, according to this ratio, put it into the melting furnace for melting at 1130℃±20℃, refining for 15min, and then continuously casting the outer diameter The hollow ingot is Φ90mm, the inner hole is Φ40mm, and the weight of a single ingot is 300kg;

[0036] (2) Preparation of coil: Step (1) Prepare the hollow ingot on the surface milling machine to mill the outer single side of 0.5mm, and carry out planetary rolling to form a completely recrystallized state with an outer diameter of Φ48mm and a wall thickness of 2.2mm. The pipe is wound into a Φ2000mm HNi65-5 nickel brass coil, the planetary rolling temperature is controlled at 780±20°C, the co...

Embodiment 3

[0042] The technique of the heavy HNi65-5 nickel-brass tube of described large plate, concrete steps are as follows:

[0043] For example: the finished product outer diameter is Φ20mm, the wall thickness is 1.2mm, and the HNi65-5 nickel brass coil in the state of annealed soft state includes the following steps:

[0044] (1) Preparation of hollow ingot: According to the mass ratio of electrolytic copper: electrolytic nickel: zinc ingot is 64.5:30:5.5, according to this ratio, put it into the melting furnace for melting at 1130℃±20℃, refining for 15min, and then continuously casting the outer diameter The hollow ingot is Φ90mm, the inner hole is Φ40mm, and the weight of a single ingot is 300kg;

[0045] (2) Preparation of coil: Step (1) Prepare the hollow ingot on the surface milling machine to mill the outer single side of 0.5mm, and carry out planetary rolling to form a completely recrystallized state with an outer diameter of Φ48mm and a wall thickness of 2.2mm. The pipe is...

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PUM

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Abstract

The invention relates to a production process for a heavy-coil HNi65-5 nickel brass pipe and belongs to the technical field of metal rolling. According to the production process, the heavy-coil HNi65-5 nickel brass pipe is prepared through preparation of a horizontal continuous casting hollow cast ingot, preparation of a planetary mill rolled heavy-coil coiled pipe, bigeminal pull continuous drawing, recrystallization annealing, coil drawing and the like. The production process solves the problems that a pipe produced through an extrusion method is low in weight, low in yield and high in cost. The production process is simple in manufacturing procedure, high in yield and short in product circulation period, the temperature and speed are easy to control, batched production is facilitated, and the heavy-coil HNi65-5 nickel brass pipe with the weight being 200 kg and above can be produced.

Description

technical field [0001] The invention relates to a production process of a heavy-duty HNi65-5 nickel brass tube, belonging to the technical field of metal rolling. Background technique [0002] The traditional HNi65-5 brass alloy pipe adopts the extrusion method, and the finished product is light in weight, low in yield and high in cost. [0003] Horizontal continuous casting, planetary rolling, and combined pull-coil technology have the advantages of less equipment investment, high processing rate, compact structure, easy operation, and low energy consumption. The domestic and foreign planetary rolling mill rolling copper coil technology is mature and widely used. application. [0004] However, in order to produce HNi65-5 brass alloy coils, it is difficult to realize the tube billet rolling according to the copper process. Because the HNi65-5 nickel brass alloy billet has poor plasticity at 450-700 °C, the three-roll planetary rolling mill is rolling Problems such as crack...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P13/00
Inventor 周向东浦益龙曹胤吕水永
Owner 江苏隆达超合金股份有限公司
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