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

Manufacturing Method of Thick Tiles for Large-capacity Pressed Drum

A manufacturing method and large-capacity technology, applied in the direction of manufacturing tools, forming tools, metal processing equipment, etc., can solve the problems of increased manufacturing costs, insufficient use of process margins, and large transition slopes on both sides of the longitudinal seam bevel, etc.

Active Publication Date: 2020-07-10
HARBIN BOILER CO LTD
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the process margin of the longitudinal seam is not fully utilized after pressing the thick tiles of the drum, resulting in a lot of material consumption, poor economic benefits, and excessive transition slopes on both sides of the longitudinal seam bevel leading to manufacturing costs. Increased problems, and then provides a large-capacity pressed drum thick tile manufacturing method

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
  • Manufacturing Method of Thick Tiles for Large-capacity Pressed Drum
  • Manufacturing Method of Thick Tiles for Large-capacity Pressed Drum
  • Manufacturing Method of Thick Tiles for Large-capacity Pressed Drum

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0009] Specific embodiment 1: The large-capacity pressed boiler drum thick tile manufacturing method described in this embodiment, the manufacturing method is to use the skewed process margin to process the transition on both sides of the longitudinal seam of the thick tile, and the specific steps are as follows: 1. Thick tile steel blanks for boiler drums are cut by gas cutting, corrected, planed and milled in advance to process the transition slope inside the longitudinal seam groove, according to the actual situation, the slope angle of the processed transition slope is 3°~8°, and the processing length is 100mm~160mm , reserve a longitudinal seam straight edge process allowance to 30

[0010] mm~38mm; 2. Thick tile steel plate blank for heating drum, and the thickness section is 6×60mm on the outer edge pad 2 ~12×80mm 2 According to the actual situation, the number of superimposed flat steel bars is 1 to 3 layers; 3. Cut off the process margin of the longitudinal seam and ...

specific Embodiment approach 2

[0012] Embodiment 2: The difference between this embodiment and the manufacturing method of large-capacity pressed boiler drum thick tiles described in Embodiment 1 is that the transition angle inside the groove of the longitudinal seam in the pre-planing and milling process described in Step 1 is 4° to 7° °, the processing length is 110 mm to 150 mm, and the margin for the straight edge of the longitudinal seam is reserved to 32 mm to 37 mm; the others are the same as in the first embodiment.

specific Embodiment approach 3

[0013] Embodiment 3: The difference between this embodiment and the manufacturing method of large-capacity pressed boiler drum thick tiles described in Embodiment 1 or Embodiment 2 is that the transition angle inside the groove of the longitudinal seam in the pre-planing and milling process is 5°-6° , the processing length is 120 mm to 140 mm, and the margin for the straight edge of the longitudinal seam is reserved to 34 mm to 36 mm; the other is the same as the specific embodiment 1 or 2.

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 a manufacturing method of a high-capacity pressed boiler barrel thick tile, relates to the technical field of boiler equipment, and particularly relates to a manufacturing technology of the high-capacity pressed boiler barrel thick tile. The invention aims to solve the problem that the transition gradients of two sides of a longitudinal joint groove are overlarge since theboiler barrel thick tile pressed longitudinal joint straight side process allowance cannot be fully utilized. The manufacturing method of the high-capacity pressed boiler barrel thick tile is characterized by fully utilizing the processed longitudinal joint straight side process allowance of an existing boiler barrel thick tile, preprocessing the transition of the inner side of the longitudinal joint groove of the thick tile before hot press molding, and reducing the thick tile longitudinal joint straight side process allowance; during hot press molding, sectionally point-pressing flat steelbars on an outer edge mat of the thick tile; and after hot press molding, processing the transition of the outer side of the longitudinal joint groove. Through the manufacturing method provided by theinvention, the manufacturing technology level, the design structure and the economic benefit of a high-capacity pressed boiler barrel are improved, and the method is applicable to pressed boiler barrel thick tiles with different thicknesses in various specifications.

Description

technical field [0001] The invention relates to the technical field of boiler equipment, in particular to a large-capacity pressed boiler drum thick tile manufacturing technology. Background technique [0002] For a long time, hundreds of large-capacity pressed boiler drums have been produced in my country, and they have been using unequal thickness double longitudinal seams 215° / 145°, R889 / R874.5 structure, SA299 thickness 153 / 182mm or DIWA35 thickness 115 / 145mm. Since the longitudinal edge of the thick tile deflects outward after pressing and cannot meet the design requirements of the arc shape, in actual production, it is necessary to reserve a 70-120mm longitudinal seam straight edge process margin to cut off after pressing, and then process the thick tile symmetrically at the same time The 14° transition on both sides of the longitudinal seam groove, the large-capacity pressed boiler drum thick tile design structure and manufacturing technology are outdated and backward...

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): B23P15/00B21D37/10
CPCB21D37/10B23P15/00
Inventor 袁承春
Owner HARBIN BOILER CO LTD