Copper-nickel alloy seamless tube and manufacturing method thereof

A technology of copper-nickel alloy and manufacturing method, which is applied in the field of seamless pipes, can solve problems such as difficult washing off of scale, high deformation resistance, and high deformation difficulty, and achieve good stress state, reduced corrosion, and good corrosion inhibition effect Effect

Active Publication Date: 2016-03-30
HUZHOU HUATE STAINLESS STEEL TUBES MFG
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Problems that are prone to occur in production and processing: 1. Difficult to perforate, prone to cracks, and easy to peel on the surface; 2. Difficult to cold rolling, difficult to deform, and high deformation resistance; Rough, severe surface corrosion

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Copper-nickel alloy seamless tube and manufacturing method thereof
  • Copper-nickel alloy seamless tube and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A method for manufacturing a copper-nickel alloy seamless pipe, comprising the steps of:

[0048] Step 1, smelting. During smelting, an induction furnace is used for smelting, and ultrasonic stirring is used. The ultrasonic frequency is 40KHz, so that the nickel and copper are evenly mixed. Its chemical composition is calculated by weight percentage: Ni≥63, Cu28-34, Fe≤2.5, Mn≤2, C<0.3, Si<0.5, S<0.024, and the balance is unavoidable trace elements.

[0049] Step 2, electroslag remelting, an argon protection device is designed in the electroslag remelting pool, and argon protection is implemented for the electroslag remelting process.

[0050] Step 3, casting a circular tube blank.

[0051] Step 4: Heating the circular tube; the heating temperature is 915-955°C.

[0052] From the heating furnace used to heat the round tube blank in the step 4 to the piercer for piercing the circular tube blank in the step 5, a heat preservation channel for the circular tube blank to p...

Embodiment 2

[0062] A method for manufacturing a copper-nickel alloy seamless pipe, comprising the steps of:

[0063] Step 1, smelting. During smelting, an induction furnace is used for smelting, and ultrasonic stirring is used. The ultrasonic frequency is 40KHz, so that the nickel and copper are evenly mixed. Its chemical composition is calculated by weight percentage: Ni≥63, Cu28-34, Fe≤2.5, Mn≤2, C<0.3, Si<0.5, S<0.024, and the balance is unavoidable trace elements.

[0064] Step 2, electroslag remelting, an argon protection device is designed in the electroslag remelting pool, and argon protection is implemented for the electroslag remelting process.

[0065] Step 3, casting a circular tube blank.

[0066] Step 4: Heating the circular tube; the heating temperature is 915-955°C.

[0067] From the heating furnace used to heat the round tube blank in the step 4 to the piercer for piercing the circular tube blank in the step 5, a heat preservation channel for the circular tube blank to p...

Embodiment 3

[0077] A method for manufacturing a copper-nickel alloy seamless pipe, comprising the steps of:

[0078] Step 1, smelting. During smelting, an induction furnace is used for smelting, and ultrasonic stirring is used. The ultrasonic frequency is 40KHz, so that the nickel and copper are evenly mixed. Its chemical composition is calculated by weight percentage: Ni≥63, Cu28-34, Fe≤2.5, Mn≤2, C<0.3, Si<0.5, S<0.024, and the balance is unavoidable trace elements.

[0079] Step 2, electroslag remelting, an argon protection device is designed in the electroslag remelting pool, and argon protection is implemented for the electroslag remelting process.

[0080] Step 3, casting a circular tube blank.

[0081] Step 4: Heating the circular tube; the heating temperature is 915-955°C.

[0082]From the heating furnace used to heat the round tube blank in the step 4 to the piercer for piercing the circular tube blank in the step 5, a heat preservation channel for the circular tube blank to pa...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
yield strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
particle diameteraaaaaaaaaa
Login to view more

Abstract

The invention discloses a copper-nickel alloy seamless tube and a manufacturing method. The copper-nickel alloy seamless tube comprises, by weight, more than 63% of Ni, 28%-34% of Cu, 0-2.5% of Fe, 0-2% of Mn, less than 3% of C, less than 0.5% of Si, less than 0.024% of S, and the balance inevitable trace elements. The manufacturing method includes the following steps of smelting, electroslag remelting, round pipe billet casting, round pipe billet heating, perforating, the first time of acid pickling, cold rolling, degreasing, thermal treatment, finishing and the second time of acid pickling. The manufactured copper-nickel alloy seamless tube is free of the appearance defects of pitting, scratches, cracks, peeling and the like, and the inner surface and the outer surface of the seamless tube are bright; according to the manufacturing method, the process is short, operation is simple and convenient, efficiency is high, the percent of pass is high, and cost is low.

Description

technical field [0001] The invention belongs to the technical field of seamless pipes, in particular to a copper-nickel alloy seamless pipe and a manufacturing method thereof. Background technique [0002] Copper-nickel alloy pipe (pipe fittings) is a kind of pipe fittings. It is made of copper and nickel alloy, so it is called copper-nickel alloy pipe fittings. At present, most seamless pipe enterprises use cold drawing or cold rolling process to manufacture seamless steel pipes. The main production process of cold-rolled (drawn) seamless steel pipe: billet preparation → pickling and lubrication → cold rolling (drawing) → heat treatment → straightening → finishing → inspection, the seamless steel pipe manufactured by cold rolling process, the cold rolling mill mold is precise , the size of the cold-rolled seamless steel pipe is accurate, but in the cold-rolling process, due to the large amount of wall reduction and diameter reduction, the number of cold-rolling passes is sm...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C22C19/03B21C37/06B21B25/00B21B45/02B21B25/04
CPCB21B25/00B21B25/04B21B45/0242B21B45/0245B21B45/0248B21B2045/026B21C37/06C22C19/03
Inventor 徐培玉沈勇
Owner HUZHOU HUATE STAINLESS STEEL TUBES MFG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap