Does anyone know the whole process of making a kettle?

The gallbladder is a glassware that is blown out. In the whole process of making the thermos flask, the inner and outer tanks are blown separately, the blowing rod is about 2 meters apart, and a ball of glass the size of a ping-pong ball is glued to the furnace, and it keeps shaking up and down while blowing, and it is almost put into the mold to be shaped. There is no support between the inner and outer tanks, which are connected by the place of the bottle mouth, and if there is, it is the asbestos in the middle, and it must be vacuumed.

A little bit of asbestos can be seen in a small transparent dot in the middle, if the asbestos falls off, the thermos flask is also scrapped, and the tip of the pot is the vacuum port, and the final sintering place is finished. As soon as this spike is broken and loses its vacuum, it is considered a waste product. As for the uniformity of the wall thickness is well controlled, because in the end it should be put into the mold, but the gas inside is unchanged, the inner cavity size of the mold is almost the wall thickness, and after being put into the mold, the pressure of the gas inside makes the material flow, so that the appearance of the bottle meets the standard.

The wall thickness is also guaranteed. Blown glass (crown glass): One of the processes used to make glassware.

After the sixteenth century, folk glass materials were widely used in the process. That is, the dissolving glass is blown into the bottle-shaped mold, and the mold is rotated to evenly distribute the solution with centrifugal force, and the mold is cut to obtain the glass after fixation. This method can obtain the appropriate thickness of glass material for stained windows and other occasions.

Invented by the English scientist Dewar. In 1900, he made compressed hydrogen into a liquid for the first time, that is, liquid hydrogen. This kind of thing had to be bottled, but there were no thermos flasks like this at that time.

He developed it himself. He used a vacuum, that is, a double-layer bottle, to remove the air from the compartment and cut off the conduction. However, the heat radiation will also affect the heat insulation, so Dewar applied a layer of silver or reflective paint to the vacuum compartment to block the heat radiation back.

Use another stopper to plug the mouth of the bottle. In this way, all three modes of heat conduction are cut off, and the inner tank can maintain the temperature for a longer time. He uses these bottles to store liquid hydrogen.

Later, it was widely used.

Mainly the inner layer of the glass falls off the inner liner glass, half of this situation occurs in the case of tap water with a pH value greater than that, this glass is a mixture of silica, magnesium oxide, calcium oxide, etc., which belongs to normal shedding, this kind of wafer itself is non-toxic and harmless, drinking it has little impact on the human body, but just in case it is recommended to use a steel inner tank kettle.

Ordinary glass, but there is a laminated layer inside, and the laminated layer is mirrored (silver), and the inside is vacuumed to keep warm and prevent convection.

The kettle pot is required to conduct heat slowly, not react with water, insoluble in water, and clean and hygienic. Silver does not react with water, is insoluble in water, clean and hygienic, in line with the last three, but the heat conduction is also relatively fast. The principle of kettle insulation is that the pot is hollow with two layers, and the middle is vacuum, and the conduction of heat requires a medium, and there is no medium in vacuum, so the heat conduction is particularly slow, so the purpose of heat preservation can be achieved.

You have time to do an experiment, take out the pot gall, there is a small tip on the outside of the bottom, Min Yu you break that tip, the pot is still intact, the air enters the interlayer, you are looking at the heat preservation effect of the pot gall. It's definitely not going to keep warm. Therefore, the thermal insulation effect is related to the vacuum degree, if the vacuum degree is low, there is more gas remaining in the interlayer, and the thermal insulation effect is poor.

When exactly did China's thermos begin? Through the study of the historical documents of the Song Dynasty, it is believed that the thermos was made and used in the later period of the Northern Song Dynasty.

The evidence is: Zhang Yuqing, the grandson of Wending Gongqi Xian, lives in Xiaoshui Town, Yiyang County, Xijing. Get the ancient bottle in the soil, the color is very black, I love it, and I put it in the study room to raise flowers.

Fang Dong is extremely cold, forget to remove the water overnight, to prevent freezing and cracking. Tomorrow, everything with water will be frozen, but this bottle is not. Otherwise, try the soup, which is not cold all day long.

Zhang or go out with the guests, put the bottle in the box, pour water and tea, all like the new boiling, since the beginning of the secret. It is a pity that it is shattered by the drunken servant. Regard it, and often pottery, etc., but the bottom of the clamp is a few inches thick, there are ghosts holding the fire like a fire, the depiction is very fine, no one can know when it is a thing.

This historical material allows us to know that the hot water bottle has been used in the Northern Song Dynasty and has aroused people's sense of novelty and mystery. Another historical document clearly describes the process of applying mercury to glass gall bottles

Huizong tasted the purple flow from the gall bottle ten, Fu Xiaojue, and the mission craftsman Fan Jin Tuoqili. The demonstrators all tied their hands and said: "Put gold in the middle, and iron it with an iron grate, it is appropriate, but the neck of the instrument is narrow and cannot be tolerated, and it is brittle and too thin to touch, it must be cured, and broken, and it would rather be punished than dare to do it."

The knowledge cannot be strong, and it is stored in the basket. On his day, when he was in the kitchen, he saw that the tin workers were very fine with pottery, and he tried to give a lecture and said: "For me Torrey."

The work is no longer proposed, but it will be picked up by Jordan. That's it. Jue said:

I look at your ability, and you are out of the forbidden garden, and you are tired of being poor? "Because of the truth. Answer:

Easy to hear. "It is to go into it and play it. I also want to read it in person, and I am fortunate to have a back garden, and I call all the metalworkers to list in the court, and inquire about them one by one, all as I said yesterday.

The tin worker is alone, taking gold forging, thin as paper, and wrapping it outside the bottle. The crowd said, "If so, who can't?"

Knowing your layman, how can you do this. The man should not laugh, and the one who was wrapped in the Russian strip was put on a silver spoon, inserted it into the bottle, and covered the mouth of the bottle with a little mercury, and made holes in the left and right holes. For a long time, the gold was attached to the full, and there was no gap, and Xu used his claw armor to evenly balance it.

Everyone looked at each other in amazement. His people said: "The glass is a vessel, how can it be restored to the touch of hard things, the mercury alone is soft and heavy, and it does not hurt when it enters, although its nature will erode gold, but it is not visible and harmless."

Great joy, generous gifts, send them.

The method of cost accounting is determined according to the characteristics of the products produced by the enterprise: it mainly depends on whether the product is multi-step production (the characteristics of the production process); whether there are sales of semi-finished products (if there are sales, step-by-step accounting may be required in order to accurately calculate the cost of semi-finished products); Whether the work (cost, production) center is divided according to product or process.

How to calculate the cost: First of all, the material cost of the product is collected, and the technical department generally needs to provide the BOM (bill of materials) of the product to ensure the accuracy of the material picking when producing according to the order or production plan. (Generally, it will ask how to deal with the defective materials and damage in the production line:.)

Withdraw the warehouse and recharge, the damaged part needs to be withheld in the current month to include the system fee, when the damaged material is scrapped, rush to withhold, and the value of the scrapped material from the raw material account transfer, the defective material belongs to the responsibility of the merchant, and the return of the merchant has two ways of returning and exchanging).

Next is the allocation of direct labor: choose to allocate labor costs for the month by selecting the labor hours invested or the completed labor hours. Whether to allocate labor, according to the company's ** whether the proportion is small, and the amount of ** is more stable, the general company wants not to allocate the cost to the work-in-process, if the accounting of the work-in-process labor, can be based on the input of man-hours, the degree of completion, the proportion of the material as a basis to apportion.

Apportionment of system costs: Choose to allocate the cost of the month by choosing the input man-hours or the completed man-hours or machine man-hours, or you can choose the method of parallel man-hours and machine man-hours (part of the cost is apportioned by machine man-hours, and partly by man-hours). **Whether or not apportioned is the same as the practice of direct labor.

Cost analysis: gross profit margin and net profit margin can be analyzed according to the sales of the current month; Net profit margin under the full cost method (making a profit and loss statement of sub-products, and selecting a certain standard for apportioning the period expenses to the product); The above two cost analysis tables can be made according to the assumption of all sales in the current month's production (because the actual performance of the month is not fully reflected in the sales, the ratio of all the sales of the current month's production and the cost of the current month's input can better reflect the operating results of the enterprise); The analysis of costs can be done by dividing the labor, system and period costs of the current month by the input hours and sales hours of the current month, so as to compare them with the unit working hours of the previous month. If you find an expense exception, you need to find out the cause and provide useful information for management.

An 8-pound liner that can be purchased at any haberdashery store.

If you use a hacksaw, the thermos will be useless, and since it has been broken, use a piece of wood to gently tap the upper joint, and twist the upper section to the right hard, and try.

You look at it from the bottom you can otherwise there is no way!

This isn't difficult, do you have a small hacksaw? If there is, it's easy, so I don't need to talk about it, you're a smart person, aren't you?

There are very few Chen Mingyuan's pots on the market, and they are really expensive, so most of them are fake.

Chen Mingyuan must have never made a purple clay pot with an inner tank.

I don't seem to have heard of his pot ever made with guts.

It's hard to explain clearly, the pot ** came?