The recycling of used steel drums has many uses. The most important one is the restructuring of steel drums. There are several forms of restructuring, summed up in the following categories:
Put the old steel drum on the roof as a storage tank, add welded water pipes and outlet pipes, and can make simple tap water; cut the steel drum from the barrel body along the diameter to make the laundry tub; cut the steel drum along the axis Open a trough that can be used as livestock, in rural areas there are people use it as a bathtub; open a large mouth above the barrel, and then welded on the bottom of the valve, you can put on a tricycle to pull water and water storage tools; There are also people using it as a solar water heater or a shower tank, etc...
In this way, slight modifications can be made for daily necessities.
In the old steel barrels, due to bumps in the course of transportation and the like, the barrels are often pitted and deformed, and the barrels and the top and bottom of the barrels are also deformed, making it difficult to complete rounding. In order to use it to remanufacture new steel drums, one method is to cut the top of the drum and the bottom of the drum along the curled edge, clean the bucket and turn it over again, add a new top of the drum and the bottom of the drum, and then perform roll closure. , The steel drums manufactured in this way are lower in height than the old ones and the capacity is smaller. The top and bottom of the old barrel can be used to make the top and bottom of the steel barrel with smaller diameter, and other products can also be made.
The change to a smaller steel drum is another form.
Use old barrel steel to make other products. The old steel drums were dismantled into three components by gas cutting, namely the top of the drum, the bottom of the drum, and the barrel, and the hard-to-use parts were cut off, and the available parts were cleaned and flattened. Flattening materials can be used as blanks for processing other products.
The recycling of waste steel drums is of high value, but the restructuring process is sometimes complicated and often involves risks. In China, accidents occur when steel drums are reformed, mainly due to burning and explosion accidents. Because the steel drums are generally inseparable from the welding and cutting operations, welding and cutting steel drums often result in explosion accidents due to contact with welding and cutting flames due to residual gasoline and flammable gas in the drums. Therefore, the welding and cutting operations of the steel drums must be implemented such as demolition, cleaning and replacement in order to perform welding and cutting operations.
1. Scrap steel welding, cutting, specific methods are as follows:
First, pour the remaining flammable liquid in the barrel, then pour it into the barrel with a hot alkali (sodium hydroxide) aqueous solution for cleaning. The amount of fire caustic soda is generally 0.5 kg for each 200-liter gasoline tank. When cleaning, 0.5 kg of fire alkali is used three times. First, pour half a cup of boiling water into the drum, place a third of alkali, and block the mouth and shake the bucket for half an hour. Then pour out the water and clean it three times in a row. Only after washing for one or two times with clean water can the welding be cut. If it has not been welded or cut immediately after cleaning, and it has been stored for a period of time, it must be rinsed with clean water for one or two times before welding and cutting. Otherwise, a small amount of gasoline that has not been cleaned will evaporate flammable vapors and an explosion will occur because the explosion limit of gasoline is very low (0.76%~7%).
2. Waste steel drum replacement welding, the specific steps are as follows:
First, the residual gasoline in the barrel is decanted, filled with inert gas such as nitrogen, and then flushed with air, followed by replacement of two or three times, and then filled with inert gas, then the hot-gas welding can be performed. If there is no inert gas, steam can be used instead, but the number of replacements should be increased appropriately.
3. Waste steel drums are welded with water. The specific process is:
If the welding point of the gasoline tank is only at the top of the barrel above the position of the steel drum, the gasoline can be drained and rinsed once or twice with fresh water. Then the bucket is filled with clean water so that no flammable vapor can accumulate in the container. This method is relatively simple, but it has its limitations. When welding any other component beside the steel drum, the inside of the steel drum must be cleaned or filled with water, because not only welding mars will endanger the safety of the steel drum, but also the steel drum will be in a live state during welding. Sparks may occur at the connection of the wire when it is energized.
If it is for repair welding, after the steel drums are welded well, check whether there is any leakage of the welds in time with clean water, and if leakage is found, repair welding shall be performed immediately. Otherwise, if the leakage is discovered after a period of time, the welding must be performed again and the cleaning must be performed again.
It is worth noting that some people use old steel drums as boilers. This is extremely dangerous and there have been many accidents in the country. Steel drums are non-pressure vessels and are just ordinary metal packaging materials. Therefore, when the old drums are regenerated, care must be taken not to violate the characteristics of the steel drums for restructuring and use.
Although equipment and energy used for welding and cutting have certain fire hazards, fire and explosion accidents do not mainly lie in the equipment and energy itself, but the vast majority are caused by paralysis in welding and cutting operations. Improper operation, lax system, and lack of implementation of safety measures. Therefore, the key is to pay attention and prevention. Prepare the safety preparations before the operation, and strictly follow the procedures during the operation. After the operation, conduct a detailed safety inspection.
Put the old steel drum on the roof as a storage tank, add welded water pipes and outlet pipes, and can make simple tap water; cut the steel drum from the barrel body along the diameter to make the laundry tub; cut the steel drum along the axis Open a trough that can be used as livestock, in rural areas there are people use it as a bathtub; open a large mouth above the barrel, and then welded on the bottom of the valve, you can put on a tricycle to pull water and water storage tools; There are also people using it as a solar water heater or a shower tank, etc...
In this way, slight modifications can be made for daily necessities.
In the old steel barrels, due to bumps in the course of transportation and the like, the barrels are often pitted and deformed, and the barrels and the top and bottom of the barrels are also deformed, making it difficult to complete rounding. In order to use it to remanufacture new steel drums, one method is to cut the top of the drum and the bottom of the drum along the curled edge, clean the bucket and turn it over again, add a new top of the drum and the bottom of the drum, and then perform roll closure. , The steel drums manufactured in this way are lower in height than the old ones and the capacity is smaller. The top and bottom of the old barrel can be used to make the top and bottom of the steel barrel with smaller diameter, and other products can also be made.
The change to a smaller steel drum is another form.
Use old barrel steel to make other products. The old steel drums were dismantled into three components by gas cutting, namely the top of the drum, the bottom of the drum, and the barrel, and the hard-to-use parts were cut off, and the available parts were cleaned and flattened. Flattening materials can be used as blanks for processing other products.
The recycling of waste steel drums is of high value, but the restructuring process is sometimes complicated and often involves risks. In China, accidents occur when steel drums are reformed, mainly due to burning and explosion accidents. Because the steel drums are generally inseparable from the welding and cutting operations, welding and cutting steel drums often result in explosion accidents due to contact with welding and cutting flames due to residual gasoline and flammable gas in the drums. Therefore, the welding and cutting operations of the steel drums must be implemented such as demolition, cleaning and replacement in order to perform welding and cutting operations.
1. Scrap steel welding, cutting, specific methods are as follows:
First, pour the remaining flammable liquid in the barrel, then pour it into the barrel with a hot alkali (sodium hydroxide) aqueous solution for cleaning. The amount of fire caustic soda is generally 0.5 kg for each 200-liter gasoline tank. When cleaning, 0.5 kg of fire alkali is used three times. First, pour half a cup of boiling water into the drum, place a third of alkali, and block the mouth and shake the bucket for half an hour. Then pour out the water and clean it three times in a row. Only after washing for one or two times with clean water can the welding be cut. If it has not been welded or cut immediately after cleaning, and it has been stored for a period of time, it must be rinsed with clean water for one or two times before welding and cutting. Otherwise, a small amount of gasoline that has not been cleaned will evaporate flammable vapors and an explosion will occur because the explosion limit of gasoline is very low (0.76%~7%).
2. Waste steel drum replacement welding, the specific steps are as follows:
First, the residual gasoline in the barrel is decanted, filled with inert gas such as nitrogen, and then flushed with air, followed by replacement of two or three times, and then filled with inert gas, then the hot-gas welding can be performed. If there is no inert gas, steam can be used instead, but the number of replacements should be increased appropriately.
3. Waste steel drums are welded with water. The specific process is:
If the welding point of the gasoline tank is only at the top of the barrel above the position of the steel drum, the gasoline can be drained and rinsed once or twice with fresh water. Then the bucket is filled with clean water so that no flammable vapor can accumulate in the container. This method is relatively simple, but it has its limitations. When welding any other component beside the steel drum, the inside of the steel drum must be cleaned or filled with water, because not only welding mars will endanger the safety of the steel drum, but also the steel drum will be in a live state during welding. Sparks may occur at the connection of the wire when it is energized.
If it is for repair welding, after the steel drums are welded well, check whether there is any leakage of the welds in time with clean water, and if leakage is found, repair welding shall be performed immediately. Otherwise, if the leakage is discovered after a period of time, the welding must be performed again and the cleaning must be performed again.
It is worth noting that some people use old steel drums as boilers. This is extremely dangerous and there have been many accidents in the country. Steel drums are non-pressure vessels and are just ordinary metal packaging materials. Therefore, when the old drums are regenerated, care must be taken not to violate the characteristics of the steel drums for restructuring and use.
Although equipment and energy used for welding and cutting have certain fire hazards, fire and explosion accidents do not mainly lie in the equipment and energy itself, but the vast majority are caused by paralysis in welding and cutting operations. Improper operation, lax system, and lack of implementation of safety measures. Therefore, the key is to pay attention and prevention. Prepare the safety preparations before the operation, and strictly follow the procedures during the operation. After the operation, conduct a detailed safety inspection.
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