"According to the process designed by the technical department, only three castings can be poured in a furnace of molten iron, and there is still some molten iron, but not enough to pour the fourth. If we can shrink the riser a little bit and save just enough molten iron to pour the fourth casting. In this way, the utilization efficiency of the electric furnace can be increased by 1/3. ”

However, the original riser design is used to subsidize the shrinkage defects, and if the riser is reduced, the shrinkage defects will be large, and the quality of the casting cannot be guaranteed. ”

"I have an idea. You see, the process requirements say that the top load of this casting is large, the structure is required to be dense, and there can be no porosity and shrinkage holes, but the load at the bottom is small, and the quality requirements are not so high. If we turn the sand mold upside down and shrink the riser, even if there are some shrinkage holes, they are still at the bottom and do not affect the quality of the top, won't it solve the problem?"

"I think it's okay. After the sand mold is turned upside down, several lower risers can be set at the bottom to carry out the lower layer of shrinkage, and the quality should be better than the original process. ”

"Alas, if you want to talk about it, this method was proposed by Master Zhang back then, Lao Hou, do you remember?"

"Why don't you remember, it was the old man who took us to discuss it together. Alas, it's been 10 years since Master Zhang left, if he is still ......"

"Far from it...... , I look at the design on the drawing, can the cold iron be increased a little ......"

"Can add a gate ......"

"Pay attention to the problem of exhaust, and the lower box should be padded to facilitate the ...... of exhaust"

“......”

Two old foundries discussed with the process engineer sent by the technical department on the spot, and Guan Zhiming also participated. Several people each took a pencil and wrote and drew on the drawings, chatting lively. Tang Zifeng stood aside, completely confused, not knowing what these people meant. It is only known that judging by the expressions on their faces, the discussion should be productive. The two retired workers looked quite confident, and the two process engineers showed a "how can you do this" expression from time to time, apparently receiving valuable inspiration from Hou Zhensheng and others.

"Li Gong, Chen Gong, is there a problem with adjusting the process according to this idea?"

After the discussion was over, Guan Zhiming asked the two process engineers.

"It should be fine, but there are some details that we have to go back and work out again. The engineer surnamed Chen replied.

"It's four o'clock in the afternoon, before eight o'clock in the evening, can you design a new process?" asked Guan Zhiming.

"This ......," the two engineers looked embarrassed on their faces.

Guan Zhiming gave Tang Zifeng a look, and Tang Zifeng knew that it was time for him to play a role. He stepped forward and said to the two engineers, "You have to finish the new process design by eight o'clock in the evening." If there are any difficulties, you can directly solve them with Chief Engineer Qin and Director Sun. I don't understand what the technical difficulties are, but I just want to say that if I can't complete it by then, I will report to Director Zhou. ”

"Uh...... Well, let's try to. The two engineers replied reluctantly.

"Not as much as possible, but as necessary!" Tang Zifeng said with a calm face and an unquestionable tone.

The two engineers stumbled back to work on the design. Guan Zhiming beckoned to Rao Shutian, who was standing not far away, Rao Shutian took two steps, came to them, and asked with a smiling face, "Old Guan, what's the matter?"

"Where is the original small electric furnace in the foundry workshop?" asked Guan Zhiming.

Rao Shutian was stunned for a moment and asked, "You mean, that power frequency electric furnace? After it was dismantled last time, it was sent to the warehouse." It's been seven or eight years now, and I don't know if it's still there. Why, old man, do you want to use that electric stove again?"

Guan Zhiming said: "One more electric furnace can speed up a little. When the electric stove was removed, I remember that it was still usable. You immediately ask people to go to the warehouse to have a look, and if it's still there, just put it back together, it's a little less efficient than the current intermediate frequency electric furnace, but it's better than nothing?"

"But it's too much of a toss...... Rao Shutian complained.

"What's the situation?" asked Tang Zifeng on the side.

Rao Shutian said with a bitter face: "What the old manager said just now is that the original electric stove in our workshop has been dismantled for seven or eight years, and I don't know if it's still there." If you want to reinstall it, it will take at least three or four days, which is not worth it. ”

Guan Zhiming sneered and said: "Why is it not worth it? If this electric furnace can be used, you can at least increase the production capacity by 1/4." Coupled with the process optimization ideas I just discussed with Lao Hou, you can complete the task of 43 sets of castings in a month, and you will be sure. What's wrong with having a few people toss around for three or four days for this goal?"

"It's such a busy time now......"

"Lao Rao, you can do what the old man wants. Tang Zifeng patted Rao Shutian on the shoulder and said, "You won't toss in vain." After this batch of business is completed, I estimate that there will be a batch, maybe 50 or even 100 units, and you will not be wrong to increase the production capacity. ”

"Alright then, I'll arrange for someone to do it right away. Rao Shutian also gave in. He could not care about Guan Zhiming's request, but he didn't dare to compete with Tang Zifeng. Zhou Heng sent Tang Zifeng to follow Guan Zhiming, not to let him be a decoration. Tang Zifeng's words are equivalent to Zhou Heng's words, and Rao Shutian has not yet had the courage to fight against Zhou Heng.

Guan Zhiming explained several other things, Rao Shutian wrote them down one by one, and promised to implement them immediately. Guan Zhiming turned his head to Tang Zifeng and said: "Things are almost the same here in the foundry workshop, and when the process department sends a new process design in the evening, let's take a look." Now let's go to the lathe workshop first. ”

"Listen to you. Tang Zifeng replied with a smile.

On the way out of the foundry workshop to the lathe workshop, Tang Zifeng asked Guan Zhiming: "Old Guan, I listened to you discuss the process just now, but I didn't understand a word. Why, did you work as a foundry before, and how could you be so familiar with casting?"

Guan Zhiming said: "When I was a worker, I worked as a turner, miller and fitter, but I never did casting. However, when he became the director of production and then the deputy director of production, he had to come into contact with all of these types of work. If you don't know the situation of each type of work, how can you manage it well?"

"But, I think you're very professional. Tang Zifeng said.

Guan Zhiming said with a smile: "Where do I seem to be professional? Let's just say that everyone discussed the casting process just now, and the core ideas were put forward by Lao Hou, Master Qi, Li Gong and Chen Gong, and I just started to coax them." In fact, there is nothing difficult about industrial technology, as long as you really settle down and learn, these things can be learned. Look at Lao Hou, he has also studied in elementary school for a few years, and he hasn't even read junior high school, what he can understand, you are a high-achieving student who graduated from a prestigious university, can you learn it?"

"It's not that easy, is it? When I entered the workshop, my eyes were dark, and I couldn't read anything. Tang Zifeng hesitated.

"It's man-made, the key is whether you want to learn or not, it's easy to learn if you want to. Guan Zhiming said, "In the past, there were many college students assigned by Linyiji, and there were some cadres with high academic qualifications in the ministry and province, but they often didn't even know what casting was." In the final analysis, it is that they despise industrial production from the bottom of their bones and feel that this thing is not worth their brains.

"There are also some people who are from engineering and have good technical skills, but if you want them to squat down with old workers like Lao Hou to discuss the process, he will not be happy, and he thinks that the workers are too earthy and not worthy of sitting with intellectuals like them.

"But as you saw just now, the process ideas put forward by Lao Hou are more ingenious than the engineers in the process department, which is called practice brings true knowledge. Let's just say that a furnace of molten iron can pour several castings, the calculation on paper is one thing, and the actual operation is another. Others can only pour three castings in one furnace, but if they are replaced by Lao Hou, they can pour four, isn't this more efficient?"

"Taught. Tang Zifeng bowed his hand to Guan Zhiming. Let's not talk about this person's character for the time being, but I don't say anything about my ability. Few people who have been able to work in the position of deputy director of production for so many years are mediocre.

When he came to the lathe workshop, Guan Zhiming still had that set of working methods. He found some experienced old workers, took the process documents prepared by the process department, discussed them one by one, and determined the idea of process optimization. The technical department has sent two other process engineers over, who are obviously familiar with Guan Zhiming's work style, and they are also involved at this time, and have a heated discussion with everyone.

There are many process schemes for machining a part, such as whether to turn the inner hole or the outer circle first, how to choose the angle and speed of the cutter head when turning, and what kind of fixture to use for the workpiece, each combination can form a process scheme. The determination of the process plan should not only take into account the processing requirements of the parts, but also consider what equipment is in the workshop, what is the technical level of the workers, cost requirements, etc., which is equivalent to solving a planning problem with dozens of constraints.

Neither Guan nor the workers have the ability to solve such complex equations, and in fact, they don't know what linear programming is. But they have a wealth of experience and instinctively can judge which process is optimal and which link can save much time. By assigning tasks reasonably and tailoring the process plan according to the skill level of each worker, Guan Zhiming saves processing time almost minute by minute, so that the workshop can complete this impossible task within the specified construction period.

Production management is really a university question. Tang Zifeng squatted aside, watching Guan Zhiming scolding Fang Xuan there, and he was very emotional. This kind of enterprise management talent that has been beaten out in perennial production practice is also a valuable asset, but it is a pity......