Global population grows continuously, be in especially foreland. These areas, be like a lot of countries of middle east, do not have enough weak source of water normally, be like laky, the river, they rely on seawater or brackish water desalination obtains drinking water. Company of Han Nuowei Belleli Energy SpA is MSF of middle east area (equipment of multistage flash vaporization) with MED (equipment of much effect distill) the main production business of equipment and supplier. Headquarters is located at the Sha Jia of A couplet chief of a tribe, the factory of other is located in respectively enlighten do obeisance to, Saudi Arabia peninsula and Qatar. These year come, they were offerred to middle east and North Africa into the MSF of 100 and MED equipment, use at treatment of fresh water desalination. The fresh water quality that treatment of these two kinds of craft gives MSF and MED is high, equipment is reliable, the operation goes to the lavatory simply. But opposite at velar technology, specific power consumption of two kinds of craft is quite tall. Normally, seawater should pass pre-treatment before entering MED and MSF facility, include to remove gas, except coagulation and deposit, filter, disinfection, activated carbon is handled and join accretion, dirty in order to restrain a knot. This can protect facility, avoid ruinous corrode, but, boiling seawater can increase saline concentration in every phase, can maintain harsh environment to any material. Production used a variety of data when MSF equipment, the meeting of of course is soldering the problem that heterogeneous connect encounters in craft. Must choose to solder appropriately material and craft, be able to bear or endure exceedingly goodly in order to make sure highest mechanical function is mixed seawater corrodes ability, avoid hot crack problem at the same time. Yi Sa solders all-aroundly bad news material in the solution, shuang Xianggang (the design of UNS S31803) is, 4mm thick 90/10Cu-Ni board, solder of intermediate a place of strategic importance a very thin OK Autrod 19. 92 (ERNi-1) , it is OK Autrod19 next.
Among 93(ERNiCu-7) layer, last face solder an OK Autrod19.
49(ErCuNi) . In fillet weld, employed 4 kinds of different alloy solder capable person. Like welding line of a place of strategic importance, ground floor uses ERNi-1 fill metal to undertake soldering, in order to reduce the Fe content of welding line metal, because this is opposite,follow-up layer resists hot crack has profit. Additionally one kind of method is to use OK Autrod 19 only.
44(ERCuAl-A2) solders fillet weld. However, the mechanical function of this kinds of connect cannot maintain same level with the mechanical function of compound layer welding line. CNC Milling