Junior College Mushroom Nail Zhou Ji

Answer 1

If you wanted to write a weekly journal about mushroom nails, here was an example:

** First week **

This week, he had come into contact with the mushroom nail related work during his internship. At first, I only had a vague idea about mushroom nails. I only knew that they were a material used to repair tires. In the first few days, I mainly observed the process of the drivers operating the mushroom nail to repair the tires. They carefully examined Lun Tai's wound and marked the location. Then, they removed the foreign object from the wound in an orderly manner. Behind their skillful movements was a rich accumulation of experience. I deeply understood that even if it seemed like a simple tire repair work, every step needed to be precise and meticulous. Any small negligence could affect the effect of the repair and the subsequent safety of the tire. This week's study made me realize that repairing tires with mushroom nails is not as simple as I thought. It involves many rigorous operations.

** Second week **

After the first week of observation and learning, I began to participate in some simple operations under the guidance of my master. In the process of repairing the mushroom nail, the inspection of the angle and size of the wound was a crucial step. I learned to use tools to check the data from the inside of the tire. I understood that if the penetration angle was greater than 25°, I had to use the two-piece method to repair it. At the same time, when dealing with the wound, it was necessary to use the cleaning agent to spray it many times and scrape the dirt with a scraper. This process seemed cumbersome, but it could effectively ensure the subsequent mushroom nail and tire fit. I have also personally tried to draw the grinding range with the wound as the center. There are strict requirements for the determination of this range. It must be about 10mm larger than the diameter of the entire crown. During the operation, I also made some small mistakes, such as not polishing evenly, but the master patiently corrected me and made me realize the importance of precise operation.

** Third week **

This week, he would study the key steps of mushroom nail repair in depth. In the process of cutting the broken steel wire, I learned to use a low-speed air drill with a carbonised steel drill bit. I cut the broken steel wire from the inside to the outside and then from the outside to the inside in a clockwise direction along the angle of the wound. This operation required extreme caution, as the cutting of the steel wire would directly affect the stability of the internal structure of the tire. The subsequent cleaning of the grinding area was not easy either. A low-speed grinder was used to clean the area with a wire brush, and then a vacuum cleaner was used to remove dust, rubber shavings, and wire shavings. All of this was to create a clean and suitable environment for the installation of the mushroom nail. When applying the room temperature curing agent, I gradually mastered the use of the spiral sizing machine. I had to apply the room temperature curing agent clockwise to the wound and the grinding area. This step was related to whether the mushroom nail and the tire could be tightly combined. I knew that I had a heavy responsibility and was especially cautious when operating.

** Fourth week **

As I became familiar with the mushroom nail repair process, I began to assist the master in inserting and fixing the mushroom nail. The blue film on the stem and crown of the plug was removed, and the film was attached to the crown of the plug. Then, the room temperature curing agent was applied to the black rubber part of the plug, and the stem of the plug was inserted into the wound. When I used a pair of pliers to clamp the entire stem of the plug that had pierced through the wound and pulled hard until the entire crown of the plug was close to the inner wall of the tire, I felt that every movement required a certain amount of skill and strength. After that, it was also crucial to use the compression roller to compress the tire from the center to the outside. This would ensure that the mushroom nail was attached to the tire. Finally, the blue and transparent film on the plug was removed, and the safety seal was applied to the edge and polished area of the plug. The excess plug stem was removed 2 - 3mm from the crown. This series of operations allowed me to see the integrity of the mushroom nail repairing the tire from the inside out. I also realized the rigor and importance of this job. Through these four weeks of practice and learning about repairing tires with mushroom nails, not only did I master the technique, but I also cultivated my patience and sense of responsibility.

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