Renovation of old steel drums
Shanghai Xugong Coating Technology Co., Ltd. Xu Guoxing
In today's increasingly energy-intensive world, people are paying more attention to the use of resources. Especially in China's steel barrel industry, the annual output of steel drums should reach tens of millions. If half of the steel barrels can be reused, the contribution to the recycling of natural resources will be enormous. And the protection of the environment is also very beneficial.
In Japan, the output of steel drums should reach more than 30 million, and most steel drums will be recycled two or three times. Although there are only a handful of steel drum manufacturers in Japan, there are more than one hundred manufacturers specializing in the repair and renovation of old barrels, and the number of old barrels repaired and refurbished to about 15 million per year. That is to say, the number of repair buckets and retread buckets should reach about 50% of the number of new steel drums.
There are many manufacturers specializing in the renovation of old barrels in China, but most of them only clean the inside and outside of the old barrels, and then shape them again. Finally, the old paint outside the original steel barrel is covered with a new layer of paint. Although the cost of this approach is not high, the requirements for the old barrels are obviously higher, and the steel barrels of poor quality will not work. So if the old barrels are all new, the ratio of repaired and refurbished steel drums to all steel drums is very low. Moreover, it is always unsightly to paint new paint on the old paint of the steel drum. In fact, if the old barrel can be completely removed with the T01 paint remover and then repainted, then the appearance will leap to a big step.
The renovation of old barrels in foreign countries is divided into two types: repairing and refurbishing. The cleaning, shaping and covering of new lacquers, which are mostly engaged in the renovation of old barrels in China, are actually the repair of steel drums abroad; and the renovation of steel drums. It is necessary to remove the bottom and cover of the steel drum, then flatten the barrel through the roller, and then polish the barrel with sandblasting or wire wheel, which looks like a new cold-rolled sheet. The bottom and the cover are treated the same, but they are first polished and placed on the press of the bottom and the cover to form the original shape; finally, the subsequent process is completed in accordance with the general practice of the steel drum. The refurbished steel barrel looks like a new steel drum.
In fact, when the steel drum needs to be refurbished, it is always necessary to thoroughly clean the inside of the steel drum. If the bottom and cover are not removed, the cleaning will not always be very clean. At least one end of the steel drum must be removed to thoroughly clean the inside of the steel drum.
The principle of unwinding equipment is simple.
Hydraulic or steam roof retreading, the steel drum is tilted up, the lower bracket roller is supported, and a guiding roller is used to support the inner wall of the steel drum adjacent to the pear-shaped uncoiler, the guiding roller has a protruding edge The flange of the surface. The pear-shaped uncoiler has a long beveled nose, and the contact portion of the pear-shaped uncoiler and the steel drum is curved in shape with the steel drum. The outer corner of the lower end of the nose portion of the pear-shaped uncoiler is rounded, and the rounded corner is tapered backwards, and the front end thereof is slightly upward and tapered.
The drum is rotated while in operation, and a pear-shaped unwinder is inserted at the combined bead of the barrel and the lower or cover. The pear-shaped uncoiler is based on the axis of the steel drum, and the combined crimping of the barrel of the steel drum and the bottom or the lid end is gradually unfolded, and the edge of the curled edge is opened along the unwinding line of the pear-shaped unwinder. With a smaller opening, the roller cuts the opening along the direction of the pear-shaped uncoiler, and is continuously unfolded along the bead of the steel drum, with a space sufficient to accommodate the pear-shaped crimper and the roller. The lower roller in the roller set supports the unrolled roll cuff under the bead of the steel drum, and the upper roller corresponds to the lower roller, and the unfolded roll cuff is clamped to the upper and lower rollers. between. The flange protruding from the upper roller is rolled along the inner surface of the edge portion of the steel barrel port, and drives the steel drum to rotate in reverse synchronization with the roller. Thus, under the rolling of the roller set consisting of at least one inner roller of the drive roller, the combined bead of the body and the bottom or cover is completely opened.
The principle of such an unwinding device is simple, but it is not very easy to manufacture such a device. However, the practical, simple and inexpensive set of old barrel refurbished equipment in China has been applied. Manufacturers without any barreling equipment can purchase a whole set of old barrel refurbished equipment for about 130,000, and it is said that this equipment can reach the output of 600 to 800 pieces of old and new barrels. If it turns out to be a barrel factory, it only takes tens of thousands of dollars to add an opening machine, a shaping machine and a polishing machine to renovate the old barrel. If you want to add an automatic drying tunnel with spraying equipment, spray booth and hanging chain conveyor, you can make the renovation bucket beautiful, and you only need to add more than 300,000 yuan.
Compared with foreign old barrel refurbished equipment, the domestic opening machine replaces the foreign barrel body and the bottom or cover combined with the curling uncoiler, which has the advantages of simple equipment and low cost. The disadvantage is that the opening machine cuts the outer layer of the curling edge with the cutting roller along the top of the barrel and the bottom or the cover, so that the cut bottom or the cover can no longer be used, only as a waste. deal with. And after cutting the bottom or cover, the crimping edge must be manually opened with a tool. The next step is to press the corrugation with a plastic flattening machine, then polish the barrel with a wire polishing machine, and then trim the artificially opened cuff on the cuffing machine, and then you can make a new barrel. Corrugated, reinforced, leak tested, inner coating, sealing, and outer coating processes were performed. However, it should be noted that because of the polishing and cleaning, it is easy to rust, so the inner coating 891 coating is indispensable.
The old steel barrel that has been refurbished, with a new bottom and cover, looks like a new steel barrel after painting.
Dining chair is a common seat in restaurants, bars, cafes and other places for people to use when dining. According to different design styles, materials, functions and uses, dining chairs can be divided into a variety of categories. The following will be a brief introduction to the product classification of dining chairs.
First, according to the design style classification
1. Simple modern style: Simple modern style dining chairs usually use simple lines and Outlines, focusing on functionality and practicality, suitable for modern restaurants and cafes.
2. European classical style: European classical style dining chairs pay attention to gorgeous details and decoration, common hollow carving design and curve shape, suitable for high-end restaurants and banquet places.
3. Nordic style: Nordic style dining chairs focus on simple, natural and comfortable design, usually using wood materials and simple lines, suitable for family restaurants and cafes.
4. Industrial style: Industrial style dining chairs often use metal materials, with simple, solid and practical characteristics, simple and unadorned, suitable for cafes and bars and other places.
Second, according to the material classification
1. Wooden dining chair: Wooden dining chair is usually made of solid wood or artificial wood, with natural, environmental protection and warm characteristics, suitable for families and cafes and other places.
2. Metal dining chair: Metal dining chair is often made of metal materials such as iron, aluminum or stainless steel, with strong, durable and easy to clean characteristics, suitable for bars and cafes and other places.
3. Plastic dining chair: Plastic dining chair is usually made of polypropylene or polycarbonate and other plastic materials, with light, waterproof and easy to clean characteristics, suitable for fast food restaurants and school cafeterias and other places.
Third, according to the use of classification
Generally, it can be divided into two uses: domestic and commercial.
1. Home dining chair: Home dining chair pays attention to comfort and beauty, common dining table chair, folding chair and bar chair.
2. Commercial dining chairs: Commercial dining chairs pay attention to durability and practicality, common bar chairs, cafe chairs and fast food restaurant chairs.
In general: dining chair as one of the important furniture in restaurants, bars, cafes and other places, according to the design style, material and use of different, can be divided into a variety of categories. Choosing a dining chair that suits your place and needs can enhance the comfort and beauty of the dining environment.
Cafe chair,wholesale chair,stackable chair,connected chair
Foshan Shengshi Zhihui Technology Co., Ltd. , https://www.zhhotelfurniture.com