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304 stainless steel spring decryption rust
by：Yongqiang
2020-10-06
304 stainless steel spring decryption rust, rust phenomenon in a 304 stainless steel material, forever strong talk about there may be several reasons:
the chloride ion
the chloride ion is widespread, such as salt/HanJi soil/water/wind/etc. 304 stainless steel spring in the presence of chloride ions in the environment, corrosion soon, even more than ordinary low carbon steel. So the use of stainless steel environmental requirements, and often need to wipe, remove dirt, keep clean and dry. The United States has an example: a certain enterprise with a oak containerized chlorine ion solution, the container has been used more than hundred years, in the ninety s, plans to change, because the oak not enough modern, stainless steel to replace 16 days after container due to corrosion leakage.
solid solution treatment
alloy elements into matrix, the matrix organization alloy content is low, the corrosion resistance is poor.
intergranular corrosion
this without titanium and niobium material tend to intergranular corrosion. Join titanium and niobium, combined with stable processing, can reduce the intergranular corrosion. In air or chemical corrosion resistant to corrosion medium of a kind of high alloy steel, stainless steel is a beautiful surface and corrosion resistant performance is good, need not after surface treatment, such as color of plating and the surface of the stainless steel inherent performance, used in a variety of steel a, often called stainless steel. On behalf of the performance of 13 chrome steel, 18 8 chrome-nickel steel high alloy steel. From the perspective of metallography analysis, because the stainless steel containing chromium and make the surface form very thin chromium film, the film is isolated from intrusion in the steel corrosion of oxygen. In order to keep inherent corrosion resistance of stainless steel, steel must contain more than 12% of chromium. Welding is applied to the occasion. Low carbon content is made in the heat affected zone near the weld in the precipitation of carbide to a minimum, and may result in precipitation of carbide stainless steel intergranular corrosion in some environments ( Welding erosion) 。
surface image
surface mark phenomenon refers to the 304 stainless steel spring after deep processing or grinding processing products, in the surface of the product line or dot defective pits.
the reason: a foreign body surface, mould surface, the blank holder pad surface has scars.
countermeasures: removal of foreign bodies before processing, scar, also can remove the orange peel by fully grinding.
orange peel phenomenon refers to the 304 stainless steel spring in grinding or other circumstances, moulded surface shape like orange peel phenomenon.
: the grinding is not sufficient, the greater the processing orange peel, coarse grains of raw materials, heat treatment to soften.
countermeasures: deep processing of products fully grinding, choose suitable heat treatment conditions, control the grain size of raw materials.
There are a wide variety of which are scientifically tested to have positive effects on the ability to leaf spring hardware. leaf spring hardware News is one of them.
Dongguan Yongqiang spring hardware Co.,Ltd. are dedicated to providing excellent underwriting and loss control advice up front, and to ensuring superior customer service through the life of the policy.
Many homeowners find that they can cut costs while keeping home cool efficiently with .
the chloride ion
the chloride ion is widespread, such as salt/HanJi soil/water/wind/etc. 304 stainless steel spring in the presence of chloride ions in the environment, corrosion soon, even more than ordinary low carbon steel. So the use of stainless steel environmental requirements, and often need to wipe, remove dirt, keep clean and dry. The United States has an example: a certain enterprise with a oak containerized chlorine ion solution, the container has been used more than hundred years, in the ninety s, plans to change, because the oak not enough modern, stainless steel to replace 16 days after container due to corrosion leakage.
solid solution treatment
alloy elements into matrix, the matrix organization alloy content is low, the corrosion resistance is poor.
intergranular corrosion
this without titanium and niobium material tend to intergranular corrosion. Join titanium and niobium, combined with stable processing, can reduce the intergranular corrosion. In air or chemical corrosion resistant to corrosion medium of a kind of high alloy steel, stainless steel is a beautiful surface and corrosion resistant performance is good, need not after surface treatment, such as color of plating and the surface of the stainless steel inherent performance, used in a variety of steel a, often called stainless steel. On behalf of the performance of 13 chrome steel, 18 8 chrome-nickel steel high alloy steel. From the perspective of metallography analysis, because the stainless steel containing chromium and make the surface form very thin chromium film, the film is isolated from intrusion in the steel corrosion of oxygen. In order to keep inherent corrosion resistance of stainless steel, steel must contain more than 12% of chromium. Welding is applied to the occasion. Low carbon content is made in the heat affected zone near the weld in the precipitation of carbide to a minimum, and may result in precipitation of carbide stainless steel intergranular corrosion in some environments ( Welding erosion) 。
surface image
surface mark phenomenon refers to the 304 stainless steel spring after deep processing or grinding processing products, in the surface of the product line or dot defective pits.
the reason: a foreign body surface, mould surface, the blank holder pad surface has scars.
countermeasures: removal of foreign bodies before processing, scar, also can remove the orange peel by fully grinding.
orange peel phenomenon refers to the 304 stainless steel spring in grinding or other circumstances, moulded surface shape like orange peel phenomenon.
: the grinding is not sufficient, the greater the processing orange peel, coarse grains of raw materials, heat treatment to soften.
countermeasures: deep processing of products fully grinding, choose suitable heat treatment conditions, control the grain size of raw materials.
There are a wide variety of which are scientifically tested to have positive effects on the ability to leaf spring hardware. leaf spring hardware News is one of them.
Dongguan Yongqiang spring hardware Co.,Ltd. are dedicated to providing excellent underwriting and loss control advice up front, and to ensuring superior customer service through the life of the policy.
Many homeowners find that they can cut costs while keeping home cool efficiently with .
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