Unlock instant, AI-driven research and patent intelligence for your innovation.

Steel shot tempering furnace

A technology of tempering furnace and steel shot, applied in furnace, furnace type, heat treatment furnace, etc., can solve the problems of low surface temperature and high defective rate of steel shot, avoid irregular expansion and realize the effect of quantitative replenishment

Active Publication Date: 2018-02-13
江苏宏远工业窑炉制造有限公司
View PDF16 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the steel shot has been quenched before tempering, the surface temperature of the steel shot is relatively low, and the tempering temperature is relatively high, so that the steel shot will be heated suddenly during tempering, so that the steel shot may appear Irregular expansion due to rapid thermal expansion, which eventually leads to a high defective rate of steel shots produced

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
  • Steel shot tempering furnace
  • Steel shot tempering furnace
  • Steel shot tempering furnace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Such as figure 1 The steel shot tempering furnace shown includes a hot blast furnace 1, a furnace body 3, and a feeding hopper 7. The furnace body 3 is provided with four-layer partitions 4, so that the furnace body 3 is divided into five chambers, the lowest chamber The chamber is a collection chamber, the top chamber is a feed chamber, and the middle three chambers are tempering chambers, and a slide rail 6 for steel shot sliding is installed in each tempering chamber. The high-temperature and high-pressure hot air generated by the hot blast stove 1 is connected to the tempering cavity of the bottom layer through the hot blast pipe 2, and the adjacent tempering cavities are connected through the pressure relief pipe 5, and the pressure relief pipe 5 is equipped with a pressure relief valve , The pressure relief pressure set by the pressure relief valve on the bottom layer is two-thirds of the air supply pressure of the hot blast stove 1, and the pressure set value of th...

Embodiment 2

[0023] On the basis of Example 1, a new material transfer mechanism is set up, such as image 3 As shown, the transfer roller 13 is installed in the cavity opened by the partition 4, and is installed in the cavity of the partition 4 through a bearing, and the circumference of the transfer roller 13 is welded with evenly distributed steel shot grooves 14. The top of the steel shot groove 14 can slide along the side wall of the hollow cavity of the partition 4; the upper surface of the partition 4 is provided with a feed channel 15 communicating with the steel shot groove 14, and the lower surface of the partition 4 is also provided with the steel shot groove 14 The connected discharging channel 16, the feeding passage 15 and the discharging channel 16 are alternately arranged relative to the conveying roller 13.

[0024] When the steel shot is tempered, the air supply temperature of the hot blast furnace 1 is controlled at 500-600℃, and the tempering chamber temperature from botto...

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 relates to the technical field of thermal processing of steel shots, in particular to a steel shot tempering furnace, which mainly comprises a hot blast stove, a furnace body and a charging hopper; the furnace body is divided into a charging cavity, tempering cavities and a collecting cavity from top to bottom in sequence by baffles; a plurality of tempering cavities are arranged, the lowermost tempering cavity is communicated with a hot blast pipe connected to the hot blast furnace, adjacent tempering cavities are connected to decompression pipes which are all provided with decompression valves, and pressure set values of the decompression valves from top to bottom are set to be increased in sequence; the baffles are all provided with conveying mechanisms, and inclined slide rails are arranged below all the conveying mechanisms of the tempering cavities; a bleeder is arranged on the bottom of the charging hopper, one end of the bleeder is communicated with the tempering cavity on the top layer, the other end of the bleeder is communicated with the charging cavity, and the bleeder pipe is provided with a bleeder valve. According to the solution, the multilayered tempering cavities are arranged and temperatures of the tempering cavities are sequentially raised from top to bottom, such that the temperature of the steel shots is gradually increased in a tempering process, and therefore, irregular expansion caused by too fast heating is avoided.

Description

Technical field [0001] The invention relates to the technical field of heat treatment of steel shots, in particular to a steel shot tempering furnace. Background technique [0002] Steel shot is a kind of spherical particles made of special materials through special heat treatment. In the preparation process of steel pellets, the generally used equipment is a centrifuge. The centrifuge pours the melted high-carbon steel into the rotating centrifugal brick, and then relies on the centrifugal action of the centrifuge to throw out various sizes of The steel shot, the steel shot that is thrown out will fall into the quenching tank and be rapidly cooled, and the rapidly cooled steel shot will be reheated and tempered, so that the steel shot will reach the required hardness. Among them, in the tempering process, the steel shot generally adopts a high temperature tempering process, the purpose is to make the steel shot have better strength, plasticity and toughness, so as to facilitate...

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 Patents(China)
IPC IPC(8): C21D9/36C21D1/18
CPCC21D1/18C21D9/36
Inventor 苏祖弟
Owner 江苏宏远工业窑炉制造有限公司