Remove the flame. If the filler metal does not melt， continue to heat the joint and try again. The melted filler metal is sucked into the casing port according to the capillary effect until a complete filler metal ring appears on the casing port. Remove the flame Pay special attention not to let the flame directly contact the filler metal. It should be the heat at the joint that melts the filler metal. In order to clean the copper pipe， the welding flux must have a degree of corrosivity and shall be cleaned after brazing. The so-called "self-cleaning" fluxes are generally not recommended because of their corrosivity.
Overview of three production methods of copper tube Copper tube is a very important material for copper materials. There are many ways to complete the production of this copper tube. For copper pipes， the following three methods are generally used to produce materials. The copper tubes produced by these three methods are not only very good in performance， but also very convenient to operate. There are three production methods for copper tube， so what are the three production methods for copper tube?
자 이레 란In buildings with continuous heating water supply， a lot of corrosion and pitting occur on heating water pipes.
그것은 우수한 전도성， 열전도성， 연전성과 부식성을 가지고 있다.
뇌 회If you want to avoid this kind of situation for a long time， you can choose passivation treatment. In this way， not only is the copper surface serious it can be cleaned under normal circumstances， but it is not a big problem to keep it in the air for one year or more after ultrasonic treatment and immersion treatment， so this effect is very good.
On the other hand， in the steel plant， the lock price of the steel plant has been falling all the time， and the order receiving is poor. The capacity utilization rate of the steel plant is low， so the market price has fallen sharply. Subsequently， the futures market rebounded in a wave， and the spot price also increased with the increase. There was an instant of large volume of transactions. However， with the decline of black futures， the market transaction volume shrank significantly. In addition， the inventory pressure was high， traders shipped at low prices， and the spot price fell under pressure. Due to the strong drop resistance of medium and thick plates， the drop amplitude and rate are less than those of threads.
Overview of three production methods of copper tube Copper tube is a very important material for copper materials. There are many ways to complete the production of this copper tube. For copper pipes， the following three methods are generally used to produce materials. The copper tubes produced by these three methods are not only very good in performance， but also very convenient to operate. There are three production methods for copper tube， so what are the three production methods for copper tube?
위생과 건강: 동관에 있는 플라스틱 관의 각종 변성제 첨가제， 첨가제 및 기타 화학 성분.
Standardized design.
In addition， it is not easy to be corroded and can adapt to various environments. It can be used normally at low and high temperatures， so copper pipes need to be selected for many times in other places.
설비 관리If the corrosion on the copper surface is found to be slight it can be erased with linen copper wire， but it is not recommended to apply oil for preservation.
The second of the five application fields of red copper plate T， red copper row and red copper tube: copper is widely used in the chemical industry to manufacture vacuum vessels， distillation pots， etc.
However， it is difficult to change this situation too much in the short term. It is expected that the domestic strip steel price will mainly rise in the short term. It is reported that in order to pursue profits， Tangshan Iron and Steel Group Co.， Ltd. is currently increasing the supply of hot coils. It does not rule out that more steel mills in the future are inclined to one end of the plate in pursuit of profits， or to lay hidden dangers for the decline. As far as tomorrow is concerned， the price may still maintain a narrow range of shock operation pattern.
Disadvantages of copper pipe As far as copper pipe is concerned， high production cost and high price are its biggest disadvantages. Compared with other pipe fittings， the cost of copper pipe is much higher， and the connection at the copper pipe interface requires high construction technology level.
발전 과정Later， Mexican scientists also found that copper has a . Recently， British researchers found that copper has a strong bactericidal effect. It is believed that in the near future， sometimes it also involves a few deoxidizing elements or other elements to improve raw materials and s， so it is also included in copper alloys. The processed materials of Chinese cor plate can be divided into four categories according to the composition: ordinary copper plate (T， T， T，자 이레 란304 스테인리스 강판， T， oxygen free copper plate (TU， TU and high-purity， vacuum oxygen free copper)， deoxidized copper plate (TUP，자 이레 란2205 스테인리스 강판， TUMn)， and special copper plate (arsenic copper， tellurium copper， silver copper) with a few alloy elements added. The conductivity and thermal conductivity of copper plate are second only to silver， and are widely used to manufacture conductive and thermal conductive devices. The red copper belt has outstanding corrosion resistance in the atmosphere， sea water， some non oxidizing acids， alkalis， citric acid)， and is used in the chemical industry. In addition， the red copper plate has outstanding weldability and can be made into various semi products and products through cold and thermoplastic processing. In the s， the output value of copper plate exceeded that of other copper alloys.
에어컨 동관 생산 기술상 납법: 이런 생산 방법은 동관이 직접 용해된 후 구리를 전해하는 것이다.
파이프를 카드 상단에 삽입하고，e 파이프의 튜브를 이음매에 고르게 바르고 파이프가 베어링 바닥에 삽입되었는지 확인한 다음 여분의 용접제를 닦아내고 이음매를 조립하고 가열할 수 있습니다.
자 이레 란Insert the pipe into the top of the bayonet，e the sleeve on the pipe to evenly apply the flux on the joint and confirm that the pipe is inserted into the bottom of the socket，자 이레 란스테인리스강 용접관， and the joint is assembled and can be heated.
Some steel mills in Liaoning are interested in purchasing pig iron， but the local resources are tight， and the iron mills quotations are on the high side， resulting in a stalemate between supply and demand. The demand for cast iron and ductile iron in Jiangsu， Shandong， Shanxi， Hebei， Henan and other regions is sluggish， and the inventory pressure of iron mills is increasing. As the price of raw materials decreases， the quotation of iron mills continues to decline. At present， the demand and cost support are weak， and there is no positive boost. The short-term pig iron market is weak and difficult to change.antages: 낮은 생산 비용과 높은 생산성.
다른 한편으로 강철공장에서 강철공장의 잠금가격은 줄곧 하락하고있으며 주문접수상황이 좋지 않다.이 제철소의 생산능력 이용률은 비교적 낮지만， 시장은 여전히 공급이 수요를 초과하고 있다.제철소의 재고와 현물 재고가 모두 상승하고 있다.이에 따라 시장 가격이 크게 떨어졌다.그 후 선물 시장이 반등하자 현물 가격도 따라서 상승했다.순식간에 대량의 거래가 일어났다.그러나 흑색선물이 하락하면서 시장 거래량이 크게 위축됐다.이밖에 재고압력이 크고 무역상들이 저가로 출하하여 현물가격이 압력을 받아 하락하였다.중후판의 낙하 저항력이 강하기 때문에 낙하 폭과 속도는 나사산보다 작다.
