[go up common sense] solder of soft drill rod and principle of solder of hard drill steel

Drill rod solder is to use the metal with lower than mother capable person melting point to serve as drill rod makings, after heating, drill rod makings is fused, weldment is not fused, capable person of mother of moisture of makings of drill rod of use liquid state, fill connect is interstitial and with mother capable person each other diffuse, join what weldment bears fruit together.
Of melting point of material of basis drill rod different, drill rod solder cent is solder of soft drill rod and solder of hard drill steel.
(Solder of 1) soft drill rod: The melting point of drill rod material of solder of soft drill rod under 450 ° C, contact intensity is inferior (be less than 70 MPa) .
Solder of soft drill rod
Multi-purpose at the electric conduction in electron and food industry, airtight and watertight equipment solder. The stannic solder that expects as drill rod with stannic lead alloy is most commonly used. Solder needs to use brazing flux commonly, in order to eradicate oxidation film, improve the damp function that drill rod expects. Brazing flux breed is very much, in electronic industry multi-purpose solder of soft drill rod of colophony alcohol solution. After solder of this kind of brazing flux residual do not have to workpiece corrode the effect, call without caustic brazing flux. Solder the brazing flux that uses when the data such as copper, iron, wait by chloridize zinc, ammonium chloride and vaseline form. The need when solder is aluminous serves as brazing flux with fluoride and fluorine borate, useful still hydrochloric acid adds chloridize zinc to wait for those who serve as brazing flux. After these brazing flux solder residual have corrode the effect, call caustic brazing flux, be necessary after solder clean and clean.
(Solder of 2) hard drill steel: The prep above of melting point of drill rod material of solder of hard drill steel 450 ° C, contact intensity is higher (be more than 200 MPa) .
Solder of hard drill steel
Contact intensity is high, some can work below high temperature. The heavy and complicated of breed of drill rod makings of solder of hard drill steel, it is with aluminous, silver-colored, copper, manganese and nickel base drill rod makings is used the widest. Makings of aluminium radical drill rod is commonly used at solder of aluminous products drill steel. Makings of drill rod of silver radical, copper radical is commonly used the drill rod solder at spare parts of copper, iron. Manganese radical is mixed makings of nickel radical drill rod is multi-purpose the spare parts such as the stainless steel that will solder to work below high temperature, refractory steel and high temperature alloy. Welder solders the data such as the difficult frit metal such as beryllium, titanium, zirconium, black lead and pottery and porcelain is commonly used palladium radical, zirconium radical is mixed the drill rod makings such as titanium radical. The characteristic that mother capable person should ponder over when choosing drill rod to expect and the requirement to contact function. Brazing flux of solder of hard drill steel is mixed by the chloride of alkali metal and heavy metal commonly fluoride, or borate of borax, boric acid, fluorine form, can make farinaceous, mushy with fluid shape. Guess in some drill rod still attend lithium, boron and phosphor, in order to enhance film of oxidation of its take out and damp ability. The brazing flux after solder is residual use Wen Shui, citric acid or oxalic acid cleanness is clean.
Advertent: The interface of mother capable person should very clean, because this should use brazing flux. The effect of brazing flux is capable person of take out mother and the oxide with drill rod outside makings and smeary impurity, safeguard drill rod makings and interface of mother capable person to be not oxidized, the damp sex that adds drill rod makings and wool brooklet use a sex. The melting point of brazing flux should expect under drill rod, brazing flux is residual to mother capable person and connect caustic should lesser. The brazing flux with commonly used solder of soft drill rod is colophony or chloridize zinc solution, the brazing flux with commonly used solder of hard drill steel is the mixture of borax, boric acid and alkalescent fluoride.

The article arranges storage-rack.onsonhardware.com of processing factory of drill rod solder