Random talk on the investigation of the hottest ba

2022-07-26
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Random talk on investigation of Xinjiang barrel industry (2)

III. equipment and production configuration

1. Cone expander

cone barrel is a new product gradually developed in China in recent years. The main production lines are concentrated in Xinjiang, and its main equipment is barrel cone expander. Originally, people only knew that Xi'an Machinery Research Institute produced cone expanders. When we visited Xinjiang, there were really a wide variety of them everywhere

Xinjiang Changde packaging container manufacturing Co., Ltd. adopts the cone expander imported from Italy, which is vertical with 16 pieces of expansion speed and 16 barrels per minute

Xinjiang Dushanzi Petrochemical Machinery Manufacturing Co., Ltd. has strong design and processing ability. After visiting the production line of Changde company, it has designed and manufactured a vertical cone expander. Its shape and principle are similar to Changde equipment. It produces 3 barrels per minute. Due to its slow speed, it is conducive to plastic forming, and the process quality is good. At present, in order to increase the output, the second cone expander is being installed. 5. It can realize high-speed transmission and will be put into production in the near future. The equipment has reasonable design and good performance, but the equipment is bulky and slightly cumbersome, which is difficult to match with most horizontal production lines in China, and the labor intensity is high

Changji Xinxin Metal Container Co., Ltd. has used the horizontal cone expander produced by Dalian Machinery Research Institute. It has been produced for more than three years (nearly 1million barrels). It is said that the equipment is stable, the quality is reliable, and there are few problems. The speed is four per minute. From the appearance and production, the design is reasonable. It is reasonable to match with horizontal production line

the metal packaging container factory of Xinjiang Agricultural Machinery Co., Ltd. uses a self-made horizontal cone expander for production, with a speed of three per minute. There are many disadvantages in the design of the equipment. First, the large end of the expansion block is outside, which increases the cantilever moment of the expansion block of the equipment, resulting in poor stress; Second, the number of expansion blocks is 12, and the bulged barrel body has obvious edges and corners. Although the equipment runs smoothly and can meet the production requirements, the design defects are obvious

Xinjiang Bazhou tractor factory adopts the horizontal cone expander produced by Xi'an Machinery Research Institute, because the factory has closed down, the workshop has been sealed, and the equipment has not been seen. However, according to liuyugui, the plant director, the equipment has been running well in the plant, producing 200000 bulging barrels in total

throughout all bulging machines, the principle is hydraulic transmission. The mechanical part is the same as the hoop expander, and the conical expansion block structure is adopted. The structure and principle of the equipment are relatively simple, so whether it is self-made or purchased, the use situation is good. Compared with the three in one equipment, the structure and system of the machine are much simpler

2. Rib expander

since there is a large rib at 100mm from the upper part of the conical barrel to the barrel mouth, a rib expander is required. Most of the machines use domestic ordinary rib expanders, but there is only one bar in the barrel. In order not to interfere with the production of ordinary 200 liter steel barrels, another one is generally set for special use

all 200 liter steel drums produced in Xinjiang have no corrugation

3. Internal coating equipment

all barrel enterprises in Xinjiang have complete steel barrel cleaning and coating production lines while collecting one data block. Generally, it includes internal and external cleaning of barrel body and barrel bottom cover, drying of inner coating and outer coating of barrel bottom cover, drying of inner coating and outer coating of barrel body

there are slight differences among factories according to different products and output. For example, Xinjiang Agricultural Machinery Co., Ltd. uses the barrel bottom to roll and seal, and carries out internal and external painting at the same station in the same paint booth at the same time, which has a high production efficiency. Xinjiang Changde packaging container manufacturing Co., Ltd. has two stations in the same paint booth to finish the internal and external coating of the barrel body and barrel bottom after being sealed. The barrel body is dried, the barrel cover is coated internally and the barrel cover is coated externally. The process connection is reasonable, the production efficiency is high and the quality is good. If the requirements for interior coating of common food (such as honey) are considered, the temperature of interior coating of PVF type coating is required to be high (generally at 260 ℃), and the interior and exterior cannot be baked at the same time. Considering the requirements of closed inner coating barrel, it is not allowed to apply inner coating after the barrel bottom is sealed. In consideration of the small investment, a line is generally applied to the bottom and cover of the barrel, and a line is applied to the barrel body. The drying temperature is adjustable, which can meet the requirements of all internally coated barrels

electrostatic painting equipment has been completely eliminated in Xinjiang painting, and high-voltage airless painting has been adopted, which has the advantages of fast speed, good quality and saving paint. The drying equipment adopts oil and gas heating, which has good effect and low cost. There is an air cooling section at the end of the drying furnace used. After about 10 fans are used to blow the barrel, the paint film is dried in time, cured well, and does not stick to hands or peel off paint

IV. process conditions

1. Barrel mouth curling process

Xinjiang Changde packaging container manufacturing Co., Ltd. adopts Italian imported equipment. While the barrel body mold is flanging, the barrel mouth is curled. The effect is excellent. The metal container factory of Xinjiang Agricultural Machinery Co., Ltd. was tested successfully by imitating the process of Changde company. At present, most domestic manufacturers roll the edge (pipe) when sealing the back, and the effect can not reach the quality and appearance of the die edge. Die flanging is a new process, which has just appeared in China. It is a new process brought to us by imported equipment. It is not only simple, but also reliable and of good quality

2. Separation of barrel hoop production

the open barrel hoops of most barrel factories in Xinjiang are outsourced and plated. As a result, the production process of barrel making is greatly simplified, which not only improves the product quality, but also saves the cost and ensures the supply

3. Seam welding problems

whether imported or domestic seam welding machines are used, the original lap size cannot be used to expand the taper smoothly. Therefore, it is necessary to modify the 150 seam welding machine, otherwise the expansion and cracking will be very serious. At present, the domestic modified welding machine can fully meet the welding requirements of expanding cone

now Shanghai Meida welding equipment Co., Ltd. cooperates with the barrel making branch to modify the 150 welding machine for the barrel making factory, with low price and high quality

4. Packaging and transportation

conical barrels are transported on pallets, which are owned by tomato sauce factories. When empty barrels are packed, each 12 barrels shall be packed in a stack, and each pallet shall be packed in four stacks. In order to wipe off the paint film on the barrel body due to the stacking between barrels, Changde company initially put a plastic foam block inside each barrel, which is the precautions for using the mortar tensile testing machine and the operating procedures of the equipment shared by the company's technicians, so that the upper barrel is not too close to the lower barrel. However, due to the cost problem, the problem is well solved by placing plastic clips at the barrel mouth

in a pallet barrel, the stacks are separated by 10mm thick and 100 ~ 200mm wide plastic foam plates, covered with large plastic bags, and tied up with three packing belts at the top, middle and bottom. The end of the barrel is also stacked with the same pallets, about 100 in each stack, four in each pallet, wrapped in plastic bags and tied tightly with packing belts

this packaging method also has many disadvantages. When placed in the open air, the plastic bag is easy to break, and the rainwater is easy to enter the barrel. Because the plastic bag is wide, it blows up with the wind, and the sharp soil enters the barrel, which is easy to be polluted. I think it would be better to use wrapping

according to the survey in Xinjiang, the conical barrel Market is developing day by day. In Xinjiang, conical barrels are also widely used for packaging asphalt barrels. According to the Petrochemical Department, the use of conical barrels for packaging asphalt is the development direction. At present, most imported asphalt is packaged in conical barrels. In addition, ketchup in China is now famous in Europe and the United States, and the demand is increasing day by day. The output of ketchup in China will increase in the future

all ketchup conical barrels in Xinjiang are processed with supplied materials. The highest processing cost is 30 yuan and the lowest is 26 yuan. The 200 liter cone-shaped asphalt barrel is made of 0.7mm cold-rolled plate, and the price of each is 70 yuan. The price of ordinary 1.0mm 200 liter closed barrel is 120 yuan. The price of 0.5mm asphalt barrel is 65 yuan per barrel. 0.6mm asphalt is used to produce asphalt barrels, each of which costs 75 yuan

most tomato paste export enterprises in Xinjiang use tomatoes to exchange for card steel, which is cheap, with a price of about 3100 yuan per ton. Most barrel making enterprises have steel import channels, and the prices are relatively cheap. Some enterprises sell steel while producing and selling steel drums. (yangwenliang)

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