Before 63 years ago, "Sanmao" had no office buildings, no dormitory, no canteen. The office is borrowed from several houses on the corner of the north side of the second floor of the second floor of the second sand plant. At that time, there were dozens of people in the whole house. They opened the conference, just around the corner of the second floor. They moved around the table and sat around a table tennis table. Accommodation, the male dormitory borrowed from the No. 10 building in Ersha, and lived with the two sand single workers. Eat in a two-sand canteen, the current two-sand bathing position. It can be said that the working and living conditions at that time were relatively poor.
The professional of grinding room is closely related to the use of abrasives, grinding wheel factories, machinery factories, military factories, light factories, etc. It is necessary to go deep into the actual situation, investigate and conduct scientific experiments, and this is often a business trip. In the more than twenty years before the 1980s, the time spent in a unit and the time of business trips were basically equal. In the 1970s, traffic conditions were very poor. There were only a few trains going to Shanghai. Only trains from Chengdu to Shanghai had no berth tickets and no seat tickets. Sometimes I bought a ticket, the car came out and couldn't get on the bus. Some people went on a business trip and couldn't squeeze it at the door. They climbed from the open window car and stood in the aisle. I have experience in business trips. Sometimes I bring a few newspapers in advance or find a piece of plastic cloth. I will go to the next stool and lay down to Shanghai. It is much more comfortable than standing. If you have a berth ticket to Zhengzhou in Beijing or elsewhere, you will need to queue up for the next day to go to the pre-sale of the train ticket at the Erqi Road to buy the berth ticket that will be sold the next day. This pre-sale is the only pre-sale in Zhengzhou at that time. Train ticket location. Sometimes you can't find a hostel on a business trip. Many hotels have a "full" sign at the door, sometimes staying overnight in the train station waiting room, or going to the nearby bathhouse after 12 o'clock in the evening. These things have been experienced in business trips at the time.
From 66 to 68 years, the experience of hot and cold in the selection and use of diamond grinding wheels was undertaken by Comrade Yan Wenhao. I am one of the participants. The test was carried out in the cutting laboratory of Wuhan Machine Tool Plant. We lived in the single dormitory of the machine tool factory. In the highest western room, I lived on the double bed on the door and leaned against the west wall. We passed the name of China III. One of the big fires in Wuhan, two summers. At that time, there was no air conditioner and no electric fan. The factory sent a bamboo chair for the care workers. In the evening, the bamboo chair could be moved downstairs to enjoy the cold. The sky was too hot to sleep, and some moved the bamboo chair to the river to sleep. I have also been there, and it is only after dawn that I will return to the dormitory. Some nights go to the washroom with cold water twice. If you don't wash it, you will not feel sweaty at night. You really experienced the heat of Wuhan summer stove. The production test of the subject was carried out in Harbin No. 1 Tool Factory and Second Tool Factory. I went alone, just in the cold winter, where I tested for more than a month, I found a small place near the second tool factory. Stayed at the hotel, there is no heating inside, it is the fire of the stove, there is no bus in the factory, it takes about 20 minutes to get to the factory, where the indoor warm and cold outside is very cold, but after returning, the two legs have arthritis. Until now, itâ€™s uncomfortable to have two legs. The coldest day was when the winter was investigated in Nanjing, it was like a heavy snow and a strong wind. Lao Yan, we both lived in a small hotel in Nanjing. Although both of them had a quilt (the quilt was very thin), the room was still ventilated. Snowflakes slid into the room, and we didn't warm the quilt one night. We left the next day. In this subject, Lao Yan taught me how to write a summary of the subject, how to do the experiment independently, and Lao Yan also had the harvest, where I found a girlfriend and became a family.
I also have to fly back to Zhengzhou to reimburse the train ticket. It was in the mid-1970s, and I had a four-year scientific research cooperation in the research institute of the Institute of Grinding, Shanghai Machine Tool Plant. The project was adapted to control grinding. In the four years in Shanghai, I have to go back to Zhengzhou two or three times a year, one of which I have already I bought the berth ticket back to Zhengzhou five days in advance, and two days after leaving, the director of the "Shangji" scientific research office asked me to talk, saying that the Shanghai Machine Tool Plant received a notice from the superior to attend an important meeting of machine tools in Nanyang, Henan. At that time, there were only two flights from Shanghai to Zhengzhou in one week. The fastest ticket for the ticket bought in the factory was one day later than my berth ticket. The director said that you can change the ticket for Master Lu. You can fly by plane one day later. (At the time, do not take the ID card on the plane), let Master Lu take the train with your ticket? I said that I have to take the lead to approve the flight. I canâ€™t go back to reimbursement. The director said that it is easy to do, Master Lu will finish the meeting, and then change the ticket back. You will also use the train ticket to reimburse the unit. In this way, the first time I took the plane was reimbursed by train ticket.
In the age of the Cultural Revolution, I had three points in my memory that I couldn't forget in my memory. 1. When I participated in the revolutionary rebel group, when I went to the city's mass meeting in the city, the big truck borrowed by the â€œSanmaoâ€ was too many people. When turning in Bishagang, the speed was fast, the centrifugal force was big, and the car was The baffle was pulled open, most of the people were dragged down, I stood at the side panel, at the bottom, my arms and legs were injured, and the rest was cured for several months; 2, I participated in the task force, After several months of external adjustment, the cities in the southeast and northwest such as Beijing, Shenyang, Dalian, Qingdao, Shanghai, Nanjing, Guilin, Guangzhou, Guiyang, Kunming, and Xi'an have all been there. From Shanghai to Nanjing, the ship in the Yangtze River is on board. Smooth, from Qingdao to Shanghai, it is a sea-water ship. When the waves rise in the evening, the ship is swaying fiercely. Like a swing, many people spit. Some people are uncomfortable to swear and never take the ship again. I have no spit, but I have no spit, but The head is a little dizzy. Outside the transfer to so many places, together with the unit business trip, the country has 70% of the provincial capital cities and tourist attractions have been to, this is a rare opportunity, I met; 3, the Cultural Revolution, the Gang of Four provoke Among the crowds, several people in the grinding room were attacked. There were three people who were forced to commit suicide. One of them was a grinding room. He and I were in the small office downstairs for a few years. He was Shanghai. People, great people, just gone, the sins of the Gang of Four will never be forgotten.
The grinding room is a highly educated and talented department. There are eight graduate students and two doctors. The graduate students are Li Changze, Su Yuhua, Yan Wenhao, Wang Wenjing, Wu Yuying, Qi Zhi, Zhu Feng, Feng Keming, and Ph.D. are Li Changze and Zhu Feng. The grinding room is also the department with the most talents. There are six deputy general managers, chief teachers, deputy directors and directors. They are Qian Weigui, Li Changze, Yan Wenhao, Wang Wenjing, Qi Zhi and Zhu Feng. Qian Weigui, the former director of the grinding department, has served as the deputy general manager, chief engineer, deputy director and director. He has served in the position of the former director of the grinding department Li Changze. After the deputy general manager transferred directly to the province, and then transferred from the province to his hometown in Sichuan Province. Among the three directors (Qian, Yan, Zhu), the longest period of time, the great change in the place is that we are the leader of Zhu Feng. Many comrades in the grinding room have obtained senior professional titles. In this group, I got everyone's help, training and training. From starting to participate in the project to completing the topic independently, from the general task to the ministerial level, from practice He has been technically and businessally improved. He has published many academic papers in five national journals. In 1993, he was awarded the title of Senior Engineer by the Professional Technical Title Office of the Ministry of Mechanical and Electronic Industry.
With the continuous development of science and technology, the grinding room projects and personnel are constantly changing, most of them turn to diamond roller, composite blade cutter, small saw blade, cubic boron nitride grinding wheel and other super-hard material tools, it Has developed into many areas.
Judging from the changes in the past ten years, the original dozens of cotton spinning mills, printing and dyeing factories, gear factories, cable factories and other factories in the western suburbs have all gone bankrupt, and workers have been laid off and unemployed. Under the leadership of the young leadership team represented by Zhu Feng, â€œSan Moâ€ has expanded its production base. The products have been sold from abroad to foreign countries. The output value has increased from more than 10 million yuan to 200 million yuan in 2012. The output value has increased. About twenty times. I think of these gratifying changes, as a retired old worker who has worked for it, sweated, bitter, and tired, and has been with him for more than 50 years, seeing it today. The development, the old look for a new look, a thriving scene, the heart is very pleased and proud.
Bit Face Shape Selection:
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For high penetration rates in soft to medium hard and fissured rock formations. Low to medium air pressures. Maximum hole deviation control.
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The all-around application bit face specifically for medium hard and homogeneous rock formations.
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For high penetration rates in soft to medium-hard with low to medium air pressures. It is the most resistance to steel wash, and may reduce theload and wear on the gauge buttons, but poor hole deviation control.
4. Flat Face Bit
This kind of face shape is suitable for hard to very hard and abrasive rock formations in applications with high air pressures. Good penetration rates an resistance to steel wash.
Carbide Button Shape Selection:
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2. Ballistic Button
3. Spherical Button
4. Two-step Button
First class special alloy steel with high strength, heat resistance and wearable
The best tungsten carbides from China are commonly applied.
Tungsten carbide from European is also available.
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