Research and implementation of chemically processed steel drums into one or two types of finished steel drums

Research and implementation of chemically processed steel drums into one or two types of finished steel drums

Xinjiang Konka Investment (Group) Co., Ltd. Kong Lingfang

The group's metal packaging company, material supply department and other places have accumulated about 16,000 200-liter steel drums for various reasons. Because of the external color of the barrel and the internal rust, the market sales are very difficult, resulting in considerable corporate assets. The backlog of quantities. At present, the steel market price remains high, and the price of steel drums is hard to rise due to market competition, which has led to a huge increase in the pressure on metal packaging companies. Therefore, improving the process, tapping potential, and increasing revenue and reducing expenditure are one of the most important ways. Based on past experience and relevant information, it is very likely that the old steel drums will be put into the market after chemical treatment and re-spraying. The feasibility analysis is as follows:

First, the processing requirements:

1. Remove defects in the exterior of the steel drum;

2. Remove the old paint layer on the outside of the steel drum;

3, eliminate the rust inside the steel barrel and there is no anti-rust phenomenon, the treatment surface is a single iron gray;

4. After re-spraying the outside of the steel drum, it basically reaches the technical index of the first-class steel drum.

Second, the feasibility analysis:

It is relatively simple to implement the process of eliminating external defects in the steel drum and re-spraying the outside of the steel drum, and manual grinding and conventional spraying methods can be adopted. It is mainly difficult to remove the old paint layer on the outside of the steel drum and the rust spots inside the steel drum. It is very difficult to use the mechanical method after the steel drum has been formed, especially the inside of the steel drum is almost impossible to implement. The analysis suggests that it is more appropriate to take a chemical treatment. Based on past experience and existing conditions, the outside of the steel drum can be treated with a special paint remover. Some of the chemical manufacturers can produce this kind of in-house, but the market is rarely sold because of the small amount of use; The four-in-one metal phosphating solution is treated, and the treatment liquid also needs to be configured in a targeted manner. This can achieve the purpose of removing the old paint layer and the internal rust spots on the outside of the steel drum without causing rust. It is completely feasible to use the special chemical agent to remove the old paint layer and internal rust spots outside the steel drum by contacting and researching with the mainland chemical professional manufacturers. To achieve this, it is necessary to take corresponding auxiliary measures, namely, process test and process plan formulation. , processing facility preparation, safety operation procedures training, etc.

Third, the process plan:

1. Process development:

Processing technology preparation→Steel barrel manual sorting and polishing→Steel barrel external paint layer soaking and cleaning→Cleaning→Steel barrel internal rust spot soaking and cleaning→Test leak→Steel barrel drying on line→Steel barrel outside spray drying→Steel barrel offline inspection Library.

2. Description of the implementation of the program:

1) Preparation of treatment technology includes preparation of chemical formulation process test and treatment facilities (treatment tank, lifting liquid pouring device, vacuum liquid suction device, etc.);

2) Steel drum manual sorting and grinding refers to the sorting operation on the surface of the steel drum with obvious weld defects and serious defects in appearance;

3) The removal of the old paint layer and the internal rust spots on the outside of the steel drum shall be continuously constructed in each treatment tank according to the regulations;

4) After the steel drum is treated, there is no residual liquid and impurities inside the barrel;

5) After the steel drum is treated, it should be sprayed on the line in time, and the residence time should not exceed 24 hours.

Fourth, economic analysis:

It is very difficult to sell the existing backlog of steel drums at 120 yuan/market. If the above process is used, the total cost will not exceed 15 yuan, and the average price will be 150 yuan/only. Each barrel can generate 15 yuan profit and 16,000 barrels. It can generate a profit of 240,000 yuan and revitalize assets of 2.4 million yuan. Therefore, achieving the above solutions is of great significance.

The initial budget processing costs are as follows:

1, paint remover 13 yuan / kg, each barrel consumes 0.12 kg, the cost is 1.56 yuan.

2, derusting phosphating solution 10 yuan / kg, each barrel consumes 0.1 kg, the cost is 1 yuan.

3, the cost of painting each barrel is 3 yuan.

4. Technical preparation The estimated cost per barrel is 0.3 yuan.

5. The estimated cost per barrel for labor is 13.86 yuan.

The total processing fee per barrel is 13.86 yuan.

Fifth, the implementation effect

The above-mentioned stripping and derusting and phosphating chemical conversion processes should be mature processes, but for the first time in our region, especially for the treatment of steel drums, and our company does not have the preparation conditions for the treatment fluids required by the workers. , thus adopting an outsourcing method. After cooperating with a chemical manufacturer in the Mainland to implement the above-mentioned scheme and submit the samples of the process test to the user for evaluation, preliminary treatment of 200 old steel drums was carried out and passed to the users after being qualified by spraying. The cost of processing each barrel is completely controlled within 15 yuan, which has achieved the expected goal. This has established a good start for saving losses, revitalizing assets, reducing corporate burdens, and enhancing corporate vitality.