Secretary Sun got back a few copper bumps, Li Hall put Mu Sanduo's products in the channel of introducing foreign capital, was selected by foreign overseas Chinese, and took the samples to Mu Sanduo to order, are several simple products, one is an elbow, one is a tee, the other is a plug, the tee and the elbow are 20 internal teeth, and the plug is 20 matching external tooth products.

Han Dajiang got back the copper ball valve, ball valves of different sizes, he took the product from a foreign country, and the profit was quite huge. In addition to the internal teeth on both sides of the ball valve products, the valve of the ball valve is similar to the iron faucet, the principle is the same, the middle of the water is also the iron ball egg, through the stem torque, the arc surface of the iron ball egg to close the waterway, open the center hole of the iron egg, to achieve the smooth waterway, so as to achieve the effect of closing the water and passing the water.

These products are larger than the nozzle of the sprayer, it doesn't matter much if the tapping is a little deeper or a little shallower, and the requirements are not very high, so it is not too difficult to do.

After these products, Han Sanjiang began to use sand turning technology, poured copper water into the sand mold, and took out the appearance of the product The color is dark in some places, dark red in some places, and even in some places there is a lead block layer, and the color of the lead block appears, this product looks simple, but the samples taken by others are the same color, and they will not appear at all.

So Han Sanjiang's four-member group put down their work and came together to discuss countermeasures. Han Sanjiang said: "Jiang Yuanqiao, Mo Damin, Gong Xuanqun, why do you think there is such a big difference between the appearance of the copper parts that came out of the sand and the samples, tell me, when they were producing, did they use the sand turning technology to make it?" If so, then why is their external color consistent, and the products we poured out, some places are dark, some places are dark red, and even some places have a lead block layer, forming a gray outer film, which means that our sand turning technology cannot meet the requirements of customers, is unqualified, and even looks vulnerable on the outside, can this still be delivered?"

Jiang Yuanqiao thought for a long time, and then said: "This copper furnace is made according to the technical content provided by them, 61% copper, 38% lead, Xinhe aluminum, and industrial monosodium glutamate titanium dioxide add up to 1%, all of which meet the standard? Why does this phenomenon occur? Besides, 61 copper is good copper, why does there appear an uneven phenomenon? This is definitely not a problem with the copper water, but a problem with our processing process, and this product is not made through the sand turning process at all! I am sure!"

Mo Damin also nodded and said, "I agree with Jiang Yuanqiao's point of view!"

Gong Xuanqun did not rush to speak, thinking about the problem, he carefully reviewed the process of opening the copper furnace, began to put copper material into the copper furnace, and then boiled the material into copper water, and then put the lead block in proportion, stirred evenly, and then put Xin, aluminum, industrial monosodium glutamate titanium dioxide, this process is done in accordance with their technical requirements, step by step, there is no detail wrong, why pour out the color of the sand turning products are different? What is the problem? Could it be that the temperature is different, yes, it may be a matter of temperature, so I thought of the crux of the problem: the water that flowed in first began to cool down, and the copper water behind it had not been poured out, and there was a deviation in time, resulting in the uneven hardness of the product, so this deviation occurred.

Han Sanjiang saw that Gong Xuanqun was deep in thought, so he didn't ask any more questions.

Mo Damin couldn't say why, Jiang Yuanqiao couldn't think of the essentials, Han Sanjiang was so anxious that he paced back and forth, and the three of them couldn't think of a way.

Half an hour later, Gong Xuanqun spoke: "We thought of it, although we boiled copper water according to their ingredient ratio, but the drawings did not indicate what process was used for production, neither said that it was used to turn sand and pour molds, nor did it say that it was injected with copper water, let alone use hot stamping dies, this is the crux of the problem!"

Han Sanjiang thought about it and said: "If we switch to copper water injection mold, I think there will be the same problem as turning sand and pouring mold." The sand and mold, the time of pouring the copper water into it is inconsistent, resulting in the difference in the temperature before and after the product, the color is inconsistent, the dark red of the dark red, the dark black of the dark, and in some places even the lead water overflows to the surface, forming a strange and ugly dark gray, and the color of the lead block will appear when wiped with a cloth, which is clearly a problem that does not work. ”

Mo Damin asked rhetorically: "What the boss means, is that we use hot stamping dies, in addition to turning sand and pouring molds, and copper water injection molds, there is only a hot stamping die left, the only way, we have to try it, but the hot stamping die needs copper rods, by the way, Mu Sanduo has round copper rods, and there are many kinds, let's choose a few to try, what do you think?"

Han Sanjiang smiled and said: "Then I'll make a few hot stamping dies, choose the best S steel as a module, Mo Damin, you calculate their volume, and see how big it needs to be to hot punch out these products."

Hot stamping is to cut the copper rod to the same large volume as the product, the volume is about the same size, after the furnace calcining, perhaps with kerosene through the bellows to spray fire, quickly burn red, the calcined product is sandwiched into the lower die of the mold, and then the upper die is washed down with a punch, the mold is closed, and then the processing process of natural cooling of the product is called hot stamping die product.

The specific temperature should be determined according to experience, observe the color chromaticity of the burnt red, such as dark red, red, or half-red and half-dark to decide, as long as you compare it several times, it is better to see dark red, or red, or half-dark and half-red.

A few days later, the punch hot mold was processed, and a few copper rods of different sizes were found in Mu Sanduo, and then cut according to the proportion, put the good material into the coking coal and burn it until they estimated the color, dark red, clamp it into the lower die, immediately punch the die, and then clamp out the punched product, throw it on the ground to cool naturally, and after punching out a few, observe the appearance of the cooled product.

After two hours, after the product cooled, there was no qualitative change, and I observed the appearance of the product, and was pleasantly surprised to find that although the appearance was not the same as the chroma of the sample, the color was yellow, and the chromaticity of the appearance was the same.

The four of them immediately looked at each other, and after a while, everyone laughed happily, and after laughing, Han Sanjiang said: "We succeeded, guys, today we want to thank Gong Xuanqun, it was he who reminded us to empathize, thank you so much!" While kissing, he said: "Brother Xiaoyan, you are our treasure, well, I love you to death!"

"Hahahaha······" Jiang Yuanqiao and Mo Damin suddenly laughed back and forth.

Han Sanjiang kissed Gong Xuanqun embarrassed, and shouted: "Enough, enough, you are not my dear Lu Yimin, kiss and kiss! Are you disgusting? If you want to kiss, go and kiss Jiang Qiao'er, she is the one who likes you the most! Come to Brother Sanjiang all day long, is Brother Sanjiang at home?" No, oh, no, this is the tube bone porridge I boiled with my own hands, it is nutritious to eat, and there are a few red dates here that he also asked him to eat raw, nourishing blood, he has low blood sugar, he needs to eat red dates, and walnuts, but unfortunately we don't sell them in the store, tomorrow I will take two days off to go to Zhuji to buy walnuts and come back, and make porridge for Brother Sanjiang. Xiaoyan, you must remember to ask him to drink porridge. If I find out that he didn't drink, I'll settle accounts with you!"

Mo Damin quipped: "Brother Sanjiang, if you drink other people's porridge, do you want to be nice to them? Why do you ignore them? Why are you like this?"

"Hahaha······" Mo Damin, Gong Xuanqun, and Jiang Yuanqiao laughed.

As soon as Jiang Qiao'er was mentioned, Han Sanjiang became sad, sitting motionless in the chair, thinking of Wang Ling'er, his heart was very uncomfortable, his brows were tightly locked, he fell into emotional sadness, and it was difficult to extricate himself.

Jiang Yuanqiao saw Han Sanjiang's depressed appearance, so he walked over and picked up Gong Xuanqun's ears and shouted: "Apologize to the boss, if you don't open the pot, you will find death!"

Gong Xuanqun saw that Han Sanjiang was unhappy, so he had no choice but to laugh and say: "Boss, I didn't mean to! I'm sorry, we can't imagine that our boss is an infatuated man! I'm sorry, I'm sorry, it's all Wang Ling'er's fault! I can't let go of what our boss thinks about day and night! I'll go to her tomorrow and ask her clearly, what does she mean? Do you want our boss?"

"Enough, don't say it, don't say it, Wang Ling'er won't come back? It's just my delusion!" Han Sanjiang said with tears in his eyes, in the past four years of correspondence, Wang Ling'er has been ingrained in his heart, and it is difficult to uproot it for a while······