Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Spheroidizing annealing furnace

A spheroidizing annealing furnace and furnace technology are applied in the field of improvement and invention of spheroidizing annealing furnaces to achieve the effects of low decarburization rate, sufficient protective atmosphere and high spheroidization rate

Inactive Publication Date: 2014-01-15
浙江瑞利紧固件有限公司
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the deficiencies in the design of the current spheroidizing annealing furnace, the finished wire is easy to decarburize after spheroidizing annealing, and the spheroidizing rate is not high. When producing difficult and complex cold heading products, the material is prone to cracking and cannot be formed. Products with complex structures, the quality of the products is not particularly ideal, and the service life of the mold will be greatly affected

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
  • Spheroidizing annealing furnace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] figure 1 As shown, the spheroidizing annealing furnace of the present invention includes an outer furnace 2, an inner furnace 3, a furnace cover 1 and a centrifugal fan 4, the inner furnace 3 is arranged in the outer furnace 2, and the furnace cover 1 and the inner furnace 3 are facing each other. The bottom of the furnace cover is spherical arc, and the outer furnace 2 is equipped with an electric heating device 5. The centrifugal fan 4 is installed between the bottom of the inner furnace 3 and the bottom of the outer furnace 2. When the centrifugal fan is working, the inner furnace, A forced convection loop is formed between the gap between the inner furnace roof and the furnace cover, the gap between the inner furnace and the outer furnace wall, and the gap between the inner furnace and the outer furnace bottom. The annealing furnace is provided with nitrogen inlet 8, methanol inlet 9, and blast inlet 6 And the overpressure exhaust port 7, the methanol inlet 9 is co...

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

No PUM Login to View More

Abstract

The invention discloses a spheroidizing annealing furnace which is characterized by comprising an external hearth, an internal hearth, a furnace lid and a centrifugal fan, wherein the internal hearth is arranged in the external hearth; an electric heating device is arranged outside the external hearth; the centrifugal fan is mounted between the bottoms of the internal hearth and the external hearth; when the centrifugal fan operates, a forced convection loop is formed in the internal hearth, a space between the top of the internal hearth and the furnace lid, a space between walls of the internal hearth and the external hearth, and a space between the bottoms of the internal hearth and the external hearth; and the annealing furnace is provided with a nitrogen inlet, a methanol inlet, a blast inlet and an overpressure exhaust outlet. A cold heading finished wire annealed by the furnace is high in spheroidizing rate and low in decarburization rate, the strength and plastic processability of a material are greatly improved, cold heading products difficult to produce and complicated in structure can be produced and are good in quality, cracking of the products during cold heading can be avoided, and the service life of a mold is greatly prolonged.

Description

technical field [0001] The invention relates to an improved invention of a spheroidizing annealing furnace. Background technique [0002] The cold heading finished wire can be directly used to make various rod parts on the cold heading equipment. The parts have high precision and strong interchangeability, especially high production efficiency and low cost, which can greatly reduce the labor intensity of workers. It is widely used in production and production of automobile and motorcycle parts. The cold heading finished wire usually has defects such as the metallographic structure is not fine (generally the metallographic structure is 1 or 2 grades), the plastic processing performance of the material is poor, so it usually needs to be spheroidized and annealed first. However, due to the deficiencies in the design of the current spheroidizing annealing furnace, the finished wire is easy to decarburize after spheroidizing annealing, and the spheroidizing rate is not high. Wh...

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): C21D9/54
Inventor 陈利荣徐小红徐顺庆
Owner 浙江瑞利紧固件有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products