Rebirth 2008: I Can Make Money Reading

Mu Yang thought about it, he currently can get 20,000 yuan in rewards for brushing money a day. If he spends more money and hires people to do things, it is indeed worthwhile.

But he is in business, and he is also exercising himself. If the workload is not large, he will experience it himself if he can do it himself.

If one day the reading system no longer rewards money, and his ability has not improved, what can he use to make money.

An hour later, Muyang took some parts drawings to the workshop and called all the workers in the workshop to gather and arrange work.

There are few people, and there is no need to hold meetings, which is a waste of time.

Distribute the drawings to the workers, and instructed: "The personnel have not been in place yet, you cut the materials according to the requirements of the drawings, process the parts, and the quantities are marked on the drawings.

We don't have quality inspectors for the time being, but I ask that the workpieces you process yourself must meet the requirements of the drawings, and you must test them yourself. If you let the unqualified products flow to the next process, the quality score will be less, which is related to you. quality pay, don't blame the auditors.

It’s okay if the processing is wrong, but it is scrapped, but I ask, I need to see the drawing requirements before processing, I really can’t understand, ask my colleagues, or call me to ask.

It must be strictly based on the drawings. Don't feel that it doesn't matter. It must meet the tolerance requirements of the drawings.

Some raw materials have not arrived yet, and may arrive in the next day or two. There are not many quantities. They will be mailed directly to the guard. Master Chen, you are responsible for registering and receiving them, and then placing them in the raw materials area. "

Muyang explained it to a welder named Chen, the oldest.

Some parts have been processed since the workers were recruited, and in two or three days, small parts can be assembled.

"Okay, boss." Master Chen took the blueprint.

"Well, I have listed a production plan schedule with production time nodes on it. I will post it on the large exhibition board in the welding area. You can pay attention to it when you have time, and tick it when you are done."

After Mu Yang explained the matter, he reminded before leaving, "By the way, these drawings are confidential and cannot be passed on. After everyone has finished processing, they must recycle the drawings.

If you can complete the task on time and according to the standard, I will give you another reward, and I hope you will take it seriously. "

After Mu Yang left, the workers also discussed Mu Yang in private. After all, he was too young, and at first they thought he was a rich second generation.

Over the next few days, Muyang began assembling the equipment as workers machined the parts.

The plasma spray welding machine mainly includes two parts, one is the welding turntable used to install the workpiece, or the positioner; the other is the plasma spray welding equipment body.

Muyang wants to build more than five plasma spray welding equipment. The cost of mass-producing welding turntables is much lower. His requirements are higher. It is estimated that the manufacturing cost of each positioner is about 3,000 yuan.

The plasma spray welding equipment itself is mainly composed of rectifier power supply, control cabinet, powder feeder, spray gun, etc.

The complete machine for surfacing cobalt-based alloys is not sold, but these spare parts are still available in the market.

For example, the technical performance requirements of the rectifier power source used for spray welding are basically the same as those of the commonly used arc welding power source. Buy a matching arc welding power source and then change it, and then assemble it.

The spray gun plasma spray gun is similar in structure to the plasma spray gun. The main difference is that the geometric dimensions of the nozzle and the electrode are quite different. The spray guns sold on the market cannot meet the requirements of Muyang and need to be self-made.

For Muyang, the most important thing is the craftsmanship. Even if the equipment is given and the key craftsmanship is not understood, the processed products still cannot meet the requirements.

Then, what exactly is the product that Muyang wants to surfacing?

This is a cobalt-based alloy STL6 with a thickness of at least 3.5 mm (before processing) and a width of about 25-50 mm (according to the size of the gate) on the sealing surface of the gate.

Why two layers of surfacing?

Wouldn't it be faster to surfacing a layer directly?

A layer of surfacing can be directly welded, and the thickness can reach 3.5 mm, but the alloy composition of the surfacing layer cannot meet the requirements.

The main chemical composition of STL6 is about 29% Cr chromium, 4.5% W tungsten, 3% Ni nickel, 1.5% Mo nickel, no more than 5% Fe iron, and the rest is a large amount of Co cobalt and other elements.

The chemical composition has a qualified range, and the most difficult to control is Fe iron.

If the gate material is carbon steel WCB (mainly iron), it is necessary to overlay STL6 on its sealing surface.

That is, surfacing structure = gate substrate WCB + cobalt-based alloy STL6 (Stellite No.6)

Because the temperature during welding reaches thousands of degrees Celsius, the iron element in carbon steel quickly penetrates into the surfacing layer (just like putting salt in boiling water, the salt molecules melt and spread quickly at high temperature. If there is too much salt in the dish, it must be Very salty, that is, unqualified. Compare iron to salt, and surfacing layer to water, too much iron, unqualified), the iron element of surfacing layer will exceed the standard, and it will not meet the requirements.

If the iron element exceeds the standard, the corrosion resistance of the surfacing layer will decrease, the medium (liquid or gas) in the valve body channel will be corrosive, and the gate plate will be in contact with the valve body for a long time. If it rusts and sticks together, it cannot be opened. valve, this is not allowed.

Therefore, the iron element of the first surfacing layer is not up to standard, and it is difficult to control the iron element~www.novelmt.com~ So try to weld as thin as possible and use it as a transition layer.

The iron element and other alloying elements of the second surfacing layer meet the requirements and meet the requirements for use, and are also the actual use layer.

Therefore, the conventional process is: the thickness of the first layer of surfacing layer is not allowed to exceed 2.5 mm (if it exceeds 2.5 mm, it is simply processed to less than 2 mm), and it is controlled to be less than 2 mm as much as possible.

Then, surfacing the second layer, the total thickness of the two layers is 4.5-6 mm, and there must be enough machining allowance.

After machining the second layer, the desired final thickness is about 3mm (slightly ground depending on the fit, but not less than 2.5mm).

For argon arc welding of STL6 surfacing by the traditional method, it is easy to weld one layer of weld at one time, but it is the most difficult to weld thin.

Moreover, it is even more difficult to control the alloying element composition in the surfacing layer.

The specific process is relatively complicated, and even if it is a skilled welder, if no one gives pointers, it is difficult to understand the meaning.

Muyang wants to do automation equipment. He will adjust the process. As long as the workpiece is placed, the welding can be started with one key, and the welder does not need to understand the specific process.

It can control the thickness very well. The thickness of the first layer is controlled at 1.5 mm, and the thickness of the second layer is controlled at 2 mm. The error will not be about 0.1 mm. Because the surface is uniform, it is enough to leave about 0.5 mm of machining allowance.

Compared with traditional craftsmanship, the advantages are very different.

After two days,

Muyang assembles the most critical equipment and asks workers to assemble other unimportant equipment.

After installation, if the debugging is qualified, he will weld the spray gun to death. If he wants to disassemble it, he can only use destructive wire cutting, which is not so easy to get out.

Two days later,

The first plasma spray welding equipment of Xinghai Machinery Company was finally assembled.