Method for producing brass alloy small-size wire bar products

A brass alloy, small size technology, used in metal extrusion dies and other directions, to achieve the effect of improving product yield and reducing production costs

Inactive Publication Date: 2021-07-30
NINGBO CHANGZHEN COPPER CO LTD
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problem that multiple wire drawing passes are required in the original hot extrusion process, the present invention provides a method for producing small-sized brass alloy wire and rod products

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
  • Method for producing brass alloy small-size wire bar products

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method for producing brass alloy small-size wire and rod products, comprising the following steps:

[0027] 1) The brass alloy ingot is heated to 600°C in a heating furnace and kept for 5.5 hours to ensure sufficient and uniform heating to obtain hot copper;

[0028] 2) Preheat the small extrusion mold to 300°C with 4 blowtorches of the same specification equidistantly distributed, keep warm, and then add the hot copper material 3 into the cavity 2 of the small extrusion mold, and the extrusion rod 5 moves to extrude heat The copper material 3 is formed by extruding the hot copper material 3 under the action of the mold core 4 to obtain a copper billet. Preferably, the mold cavity 2 can be made into a truncated cone, the cross-sectional area gradually decreases from the entrance to the exit, and the diameter of the exit hole is 80% of the straight hole of the entrance hole. A choke block can also be arranged between the mold core 4 and the mold cavity 2 to form a 17°...

Embodiment 2

[0031] A method for producing brass alloy small-size wire and rod products, comprising the following steps:

[0032] 1) The brass alloy ingot is heated to 610°C in a heating furnace and kept for 5 hours to ensure sufficient and uniform heating to obtain hot copper;

[0033] 2) Preheat and keep warm the extruding mold with two torches of the same specification equidistantly distributed, the preheating temperature is 250°C, then add the hot copper material 3 into the die cavity 2 of the extruding mold, extrude the rod 5 Extrude the hot copper material 3 by motion, and extrude the hot copper material 3 under the action of the mold core 4 to obtain a copper billet. Preferably, the mold cavity 2 can be made into a truncated cone, the cross-sectional area gradually decreases from the entrance to the exit, and the diameter of the exit hole is 76% of the straight hole of the entrance hole. A choke block can also be arranged between the mold core 4 and the mold cavity 2 to form a 17° ...

Embodiment 3

[0036] A method for producing brass alloy small-size wire and rod products, comprising the following steps:

[0037] 1) The brass alloy ingot is heated to 590°C in a heating furnace and kept for 4 hours to ensure sufficient and uniform heating to obtain hot copper;

[0038] 2) Preheat and keep warm the extruding die by using three torches of the same specification distributed equidistantly. The preheating temperature is 320°C. 5 Extrude the hot copper material 3 by motion, and extrude the hot copper material 3 under the action of the mold core 4 to obtain a copper billet.

[0039] 3) Use conventional stretching methods to apply tension to the extruded copper billet to change its shape and size, so that the shape and size of the stretched copper product meet the required requirements; slowly heat the stretched product to 580°C , heat preservation for 9 hours and air cooling for 2.5 hours, then strip the skin to obtain a small-sized wire and rod brass alloy product with a diame...

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
Diameteraaaaaaaaaa
Diameteraaaaaaaaaa
Login to view more

Abstract

The invention relates to the technical field of copper casting production, and provides a method for producing brass alloy small-size wire bar products. The problem that multiple wire drawing passes are needed in a hot extrusion process is solved. The method comprises the following steps that (1) a brass alloy ingot is heated in a heating furnace to obtain a hot copper material; (2) the hot copper material is added into an extrusion die to be subjected to extrusion forming, a copper blank is obtained, and a stretched product is obtained after stretching; and 3) the stretched product is heated, cooling and peeling are carried out to obtain the small-size wire bar brass alloy. According to the method, the aperture specification and the choked flow angle of an existing hot extrusion die are improved, and meanwhile, the temperature is controlled, so that the production of small-size (3.2-3.5 mm) extruded copper products is realized.

Description

technical field [0001] The invention relates to the technical field of copper melting and casting production, in particular to a method for producing small-sized brass alloy wire and rod products. Background technique [0002] Due to its excellent performance, brass alloys are widely used in the manufacture of water tank belts, water supply and drainage pipes, medals, corrugated pipes, serpentine pipes, condenser pipes, bullet casings and various punched products with complex shapes, hardware and other fields. With the advancement of my country's industrialization process, the demand for brass products in more and more fields is gradually increasing, such as smaller-sized brass rods or wires. The size of the wire and rod produced by the traditional production process is difficult to make a small size, which weakens the company's competitiveness in the market. [0003] It is currently a method with high production efficiency and good quality stability to mass-produce brass a...

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
IPC IPC(8): B21C23/20B21C25/02B21C37/04
CPCB21C23/205B21C25/02B21C37/04
Inventor 宋卡迪宋卡洪徐红光郎滨
Owner NINGBO CHANGZHEN COPPER CO LTD
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