The implication of quality of stainless steel appearance and heat treatment

The actor bad of quality of stainless steel appearance, important decision the pickling working procedure after heat treatment, but if before one appearance that place of heat treatment working procedure forms oxidizes Pi Hou, or construction is not well-balanced, use pickling and cannot improves appearance not as good as bright and clean spend and well-balanced sex. Should enrich regard highly heat treatment in order to be heat or the appearance liquidation before heat treatment.
If stainless steel board ply of appearance oxidation skin is not well-balanced, the base metal appearance below large place and thin place is bright and clean degree also difference, face and of skin of oxidation of the appearance when pickling deliquescent the base metal of as adherent as oxidation skin place by corrode horizontal difference acerbitily, in order to be, armor plate appearance is not well-balanced. Accordingly, when heat treatment heats, form oxidation skin well-balancedly what must make. Want to arrive at this one requirement, involve undermentioned requirement, should give meticulous.
(If 1) heats when workpiece appearance adheres to oily, the oxidation skin ply of the oxidation skin ply of oily adherent place and other department becomes accomplishment difference with compose, and meeting be pregnant with produces cementite. Oxidation is hypodermic base metal is corroded acerbitily will austerely by the branch of cementite. The oil with the ejective place when heavy oil burner burns at first drips, if adhere to,go up in workpiece, the impact is very big also. Operate the high-ranking official's dactylogram is adherent in workpiece when going up, also meet influential. In order to be, the bath makes a high-ranking official do not fight continuously with the hand feel stainless steel, do not make workpiece is touched new smeary. Must wear clean glove to operate. If workpiece appearance has the adherent lube when cold working to wait, must enrich in solution of degreasing agent of 3 chloric ethylene, caustic soda defatted hind cleanse of reoccupy warm water, hold heat treatment again next.
(2) if workpiece appearance has sundry, waiting for is not organic matter or grey adherent workpiece when going up, heat to be able to be opposite admittedly oxidation skin is influential.
(The stainless steel appearance that 3) gas rests or oily blaze fights directly and the oxidation skin that do not have the local place be pregnant with that fight to happen have a difference. In order to be, must make deal with when heat punishment do not fight directly blaze mouth.
(If 4) deals with punish local the oxidation skin that there is remains before heat treatment, there are the place of oxidation skin remains and the place that do not have oxidation skin after heating, the difference on the ply of skin of meeting occurrence oxidation and identity, the appearance after causing pickling is not well-balanced, in order to be not only want meticulous and culminating heat treatment, and also want heat treatment of contented and meticulous center and pickling.
(5) appearance is bright and clean the influence when spending a difference
If appearance is bright and clean,spend a difference, even if heat likewise, its appearance is coarse the oxidation skin of place and fine point is not duplicate also. For example, the place that liquidates in last stage of local defect fall and the place that did not liquidate, form the condition difference of oxidation skin, appearance of the workpiece after reason causes pickling is not well-balanced.
(The difference of the atmosphere inside 6) furnace
The atmosphere inside furnace is in each local difference, the formation of oxidation skin also can have change, this also is the not well-balanced cause after causing pickling former by. In order to be, when heat, the atmosphere of each place inside furnace must duplicate. For this, also must the loop of consider atmosphere.
Have additionally, form heat the brick that work place wears with the stage, asbestine, if contain moisture content, when heat, moisture is about to evaporate, fight directly the atmosphere of the branch of vapor and other department produces a difference with respect to meeting be pregnant with, the formation of oxidation skin admittedly also with respect to the difference. Accordingly, with heat the object that workpiece fights directly, must fall last stage enrichs stoving literary talent to use. But, if stoving hind is arranged below normal temperature, in humidity tall environment falls, moisture still can condense in workpiece in person. In order to be, had better be the drying before be being used.

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