Integral drawn technique for faceplate of buffet dinner stove

A furnace panel and buffet technology, which is applied in the direction of forming tools, manufacturing tools, metal processing equipment, etc., can solve the problems that affect the overall quality and service life of the panel, increase the processing steps of the dining furnace panel, and increase the production cost of the panel, so as to improve the appearance Quality and service life, good price advantage, and the effect of avoiding missing soldering

Inactive Publication Date: 2009-08-12
宁波格兰特制冷设备制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sheet material welding process first increases the processing procedures and material loss of the kitchen stove panel, which greatly increases the production cost of the panel; moreover, it is difficult to avoid the existence of defects such as missing welding and desoldering during the welding process, thus Affect the overall quality and service life of the panel

Method used

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  • Integral drawn technique for faceplate of buffet dinner stove
  • Integral drawn technique for faceplate of buffet dinner stove
  • Integral drawn technique for faceplate of buffet dinner stove

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Now take 1Cr18Ni9Ti stainless steel as an example to manufacture square buffet stove panels.

[0024] (1) the grade is 3042B, and the stainless steel coil material with a thickness of 1.8mm is cut into 810 × 610 sheets with a plate shear, and the four corners are cut off to form an octagonal sheet;

[0025] (2) Send the corner-cut material into a 315-ton hydraulic press and concave and convex molds for deep drawing, and lay a 2μm polypropylene film between the mold and the workpiece as a lubricant, and the drawing height H is 60-70mm. deep artifacts such as figure 1 shown;

[0026] (3) Use a 160-ton punch to cut off the outer edge of the drawn workpiece;

[0027] (4) Send the sheared workpiece into a 315-ton hydraulic press and a shrinking die to compress the mouth to the required diameter. The die 3 is a barrel cavity with a bell mouth, and the angle between the inner slope of the bell mouth and the inner wall of the barrel is 21° ~ 220 degrees, the positioning mol...

Embodiment 2

[0035] Take the 1Cr18Ni9 stainless steel plate as an example to manufacture the circular panel of the buffet stove.

[0036] (1) Use the φ640 sheet of the stainless steel coil with the grade 2012B and a thickness of 1.8mm, and the shape of the workpiece is as follows Figure 7 shown;

[0037] (2) The circular piece is fed into a 315-ton hydraulic press and concave and convex molds for deep drawing. The lubricant is 1 μm polyethylene film, and the drawing height is 60-65mm. The shape of the workpiece is as follows: Figure 8 shown;

[0038] (3) Place the drawn workpiece in an electric furnace for annealing for 1 hour at an annealing temperature of 1050°C to 1080°C with 99% nitrogen concentration protection;

[0039] (4) Send the annealed workpiece into a 315-ton hydraulic press and concave and convex molds for deep drawing. The lubricant is polyethylene film, and the drawing height is 10-20mm;

[0040] (5) Use a 160-ton punch to cut off the outer edge of the workpiece that h...

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PUM

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Abstract

An overall drawing process for a buffet stove panel, comprising the following steps: cutting the stainless steel coil material with a shearing machine into a sheet of the required size for the panel; applying pressure to the sheet and drawing it to the required height; applying compression to the workpiece to the required caliber ; Punch out a large-diameter square hole or round hole in the middle of the workpiece that has been punched through the neck; punch out a horizontal groove on the top of the workpiece that has been punched through the large hole; stretch and flang the edge of the middle hole of the workpiece; Polishing, cleaning, inspection and storage. There is no welding between the dining stove panels manufactured by the above-mentioned overall deep drawing process, which overcomes many defects caused by the welding process, such as many procedures, complicated processes, and many manufacturing hours, and reduces production costs; The quality problems caused by missing soldering and desoldering improve the appearance quality and service life of the panel, and also make the buffet stove have a better price advantage and better economic benefits in the market competition.

Description

technical field [0001] The invention relates to a method for manufacturing a buffet stove panel, in particular to a process method for overall deep drawing of a buffet stove stainless steel panel. Background technique [0002] The buffet stoves currently used in hotels and restaurants are mainly used as heat preservation containers for dishes and food. With the progress of society and the improvement of people's living standards, people pay more and more attention to the appearance of products. At present, the panel of the buffet stove is connected as a whole by a plurality of blanks by welding. The sheet material welding process first increases the processing procedures and material loss of the kitchen stove panel, which greatly increases the production cost of the panel; moreover, it is difficult to avoid the existence of defects such as missing welding and desoldering during the welding process, thus It affects the overall quality and service life of the panel. Conten...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D53/00B21D22/20B21D22/02B21D28/24B21D19/00B21D37/10
Inventor 吴平陈聪祥
Owner 宁波格兰特制冷设备制造有限公司
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