Drill rod solder and common defect are handled

(One) the moisture that drill rod expects and spread out
When drill rod solder, the liquid drill rod that should fuse only expects admirably brazed seam of cram of ability of appearance of damp mother capable person. Measure drill rod to expect the large and small of damp to mother capable person ability, usable drill rod expects (fluid photograph) with mother capable person (solid photograph) the large and small of feeling included angle when be being felt will make clear. Influence drill rod expects the main factor of damp mother capable person has:
1. The component of drill rod makings and mother capable person
If drill rod expects with the mother material is in,solid state and liquid state fall to all do not deliver result of crop manage chemistry, criterion the damp effect between them is very poor, be like lead and iron. If drill rod expects,can make compound with mother capable person, think drill rod expects can better land is damp mother capable person, for example silver is right copper.
2. Temperature of drill rod solder
Drill rod solder heats the addition of temperature, because drill rod expects element of the demote below outside pulling force can improve drill rod to expect,be opposite the damp sex of mother capable person, but temperature of drill rod solder cannot exorbitant, can form drill rod makings to lose otherwise, grain is grown wait for defect.
3. Oxide of appearance of mother capable person
If appearance of metal of mother capable person is put in oxide, liquid state drill rod expects meeting agglomeration is normally glomerate, as not damp as fit of mother capable person, so, be necessary before drill rod solder abundant shovel deoxidize changes thing, ability ensures crackajack damp effect.
4. Surface roughness of appearance of mother capable person
When the effect is weaker between drill rod makings and mother capable person, appearance of mother capable person went to special Maoxi effect since coarse groove, the moisture that can improve drill rod makings to go up in mother capable person and spread out.
5. Brazing flux
Fortune of drill rod solder can eradicate drill rod makings and the oxide with mother outside capable person with brazing flux, improve damp result.

(2) the Mao Xi activity that drill rod expects
When drill rod solder, stuff of liquid drill rod should go along space cram brazed seam, because space is very little, seem capillary, the skilled work is wool that says so is moved. Wool skilled work moves the large and small of ability, can resolution drill rod expects whether cram brazed seam is interstitial.
The element that influence liquid drill rod expects wool skilled work is moved a lot of, the damp ability that basically has drill rod stuff and contact space large and small, if drill rod expects damp to mother capable person sex is good, contact has lesser space, can get activity of crackajack drill rod makings and fill function.

(3) each other effect of drill rod makings and mother capable person
Makings of liquid state drill rod is filled in Maoxi break out with mother capable person in unoccupied place process each other are physico-chemical the effect, these each other effects are affected to the function of connect of drill rod solder very big, they can divide it is two kinds:
1. What mother capable person expects to drill rod is deliquescent
Break out normally when drill rod solder the deliquescent process that mother capable person expects to liquid drill rod, can make drill rod expects component alloy is changed, be helpful for ascensive connect intensity. But the melting point that the excessive and deliquescent meeting of mother capable person makes liquid drill rod expects and viscosity increase, mobile sex becomes poor, send indispose normally cram brazed seam is interstitial, may make together because appearance of mother capable person is ham dissolve and present the defect such as low-lying.
2. Drill rod expects group share disperses to mother capable person
When drill rod solder, also present share of group of drill rod feed to mother capable person dispersive, undertake with two kinds of methods dispersedly: One kind is group of drill rod feed yuan to all Mu Caijing bead interior disperses, form solid solution layer at the same time in what adjacent brazed seam punishs mother capable person, butt joint head won't produce undesirable effect. Another kind is group of drill rod feed yuan arrive dispersedly the grain chasm of mother capable person, often make crystal boundary hair fragile, be in especially thin the contrast when solder is showing a drill rod.