Lecture of steel Drum Production Line Training - THREE

Section cooperage craft survey

One, cooperage process

The figure is now widely used in cooperage process flow diagram.

Barrel roof line:

Uncoiling leveling → → → flange punching stamping spirals lock → → Surface mounted inside the spray drying → → → → drying → preroll spray drying → (import barrel body line)

Barrel body linesindex.html:

Uncoiling leveling → → → length cut edging rolling → → → seam welding spot leak → → → pressure cuff ring bars forming corrugated → → surface treatment → drying → → drying inside the spray → (import barrel roof) → top → bottom pressure with leak after seaming → → → water surface phosphating spray drying → → → cooling Hung Chien paint curing → → surface printing on bung → packaging and storage

Flow includes both the production process and the coil plate production process, including the use of semi-automatic seam welding process with the use of automatic seam welding process. But also includes a phosphate treatment with the spraying process flow.

Production requires the use of steel drums using coil unwinding → → ruler to cut the leveling process; using flat material production cut-Shears can be used only drums.Semi-automatic seam welder, after edging the need to increase the volume and spot round two areas; using automatic seam welder, you can save spot, but also includes automatic rolling seam welder within it. In addition, the use of automatic seam welder, if the choice of high-quality cold-rolled steel as a raw material, but also eliminates the need for edging this link, to further simplify the cooperage craft. Phosphate treatment with the spraying, currently in the country has not yet been widely adopted, but they do improve the surface quality of steel drums, steel drums enhanced corrosion resistance of a good way.

Spiro ring and bung production process as shown below.

Spirals production flow chart:

Blanking second stretch stretching → → → Cutting → finishing hoisting turning reaming tapping → → → Packaging plated polished edges →

Bung production process as shown below:

Blanking finishing stretch → → → Cutting → edging rolling spot plate buckle → → → Plating → Packaging polished edges

Both the process and the TM60 × 2 different specifications TM27 × 2 is a difference between closed. For TM27 × 2 closure, in the production of spiral ring and barrel plug is required, respectively, with secondary finishing stretch with two links, for the TM60 × 2 screw rings and bungs, these two processes can not.

Second, cooperage process overview

Cooperage tools used in the production process involves a wide range, can basically be divided into three categories, namely, mechanical processing, welding and coating processes.

1, the machining process

Cooperage used machining process can be divided into two categories: metal cutting process; Second, no cutting processes.

Metal cutting processes, such as sheet metal edging grinding, reaming forming spirals turning and threading. Such processing as compared with ordinary cutting, is essentially identical. Just to improve processing speed, cooperage production has its own special equipment, such as milling machines, lathes and special tapping machine. Thus enabling them to keep up with the beat and reach cooper cooperage machining process requirements.

Without cutting the production process in cooperage more widely, such as sheet metal cutting, bottom entry and closure of the stamping, body shaping and curling barrel rotary spinning and rolling bung thread forming and rolling The roll forming belong to no cutting.Stamping process in which the most widely used, almost applications, including punching, stretching, bending, forming, including all the stamping process. Rotary spinning process is the cooperage unique processing technology, only applicable to steel drums shell shape pieces. Machining, steel drums holding the tire tool and with the lift on a rotating wheel as a processing tool used to make it part of the bend - Board Edge, extrusion stretch - up tendons, into undulating - corrugated, rounded edges the parts combined - curling. Which rose tendons processing, is currently often used cold extrusion process, pull side in recent years to use more cold extrusion processing, ie processing drums does not rotate.

2, the welding process

Cooperage the welding process can also be divided into two categories: one barrel body straight seam seam welding process; Second barrels are pre-assembled and installed bung pull buckle spot welding. Both are used welding resistance welding.

Seam welding electrode wheel is used as the electrode, welding can be continuously processed. Barrel body is pre-assembled using a simple welding, the electrode is a common electrode tip, two welding process twice. The bung pull buckle pull the buckle assembly is the first in a number of bumps stamping, and then using special shaped electrode tip as an electrode, which is equivalent to several spot once Forming.Therefore, strictly speaking, this should belong projection welding weld.

3, the coating process

Coating process is to ensure that the surface quality of steel drums, steel drums enhanced corrosion resistance is an important means of technology. At present, the domestic use of the coating process is the most widely used paint coating process, electrophoretic coating process as well as metal spraying, phosphate processing and other new technology. By the spray in different ways, can be divided into the air atomized spray and airless spraying, electrostatic spraying.

With cooperage development of production, the new coating process will gradually be applied, such as powder coating process, electrophoretic coating process of metal coating, phosphate processing and other new technology. Cooperage steel galvanized steel and iron, plastic or metal printing plate after plate, cooperage process will be greatly simplified, cooperage coating process will no longer be an important part of the necessary process. Of course, these new processes, new materials, although the anti-corrosion effect even better than the spray paint, but the cost is much higher, process, technology is much more complex, and thus now extensive use of or paint coating processes.