Reasons for rusting of stainless steel cable ties and surface treatment methods
2024-07-27 3181What are the reasons for stainless steel cable ties rusting
1. Chloride ions.
One reason for the rusting of stainless steel cable ties is due to the influence of chloride ions, as stainless steel cable ties will quickly corrode in environments with chloride ions. Therefore, it is recommended to try to locate areas with high chloride ions, such as beaches, chemical plants, salt fields, etc., and regularly wipe them to remove dust and maintain cleanliness and dryness.
2. Chemical effects.
If stainless steel cable ties are rolled up and exposed to a humid environment, they are prone to rusting, which is caused by the gap electrochemical reaction of stainless steel spray coated cable ties.
3. Does not contain titanium and niobium.
The chemical composition of stainless steel cable ties does not contain titanium and niobium, making them prone to intergranular corrosion. The solution is to add titanium and niobium, and then stabilize them.
4. It has not undergone solid solution treatment.
Due to the lack of alloy elements dissolved in the matrix, the alloy content in the matrix structure is low and the corrosion resistance is poor.
Pre treatment method for metal surface of stainless steel cable ties:
1. The main methods for metal surface pretreatment include manual, mechanical, spray, and chemical methods.
2. Manual and mechanical rust removal are used for rust removal operations with low quality requirements and minimal workload.
3. Spray rust removal is the use of high-pressure air as a power source to rapidly spray abrasive onto the metal surface through a sandblasting nozzle. By relying on the impact and friction of the abrasive edges, a certain roughness of the metal's natural surface is exposed.
4. Chemical rust removal is the process of using various acid or alkali solutions to react chemically with metal surface oxides. Stainless steel spray zip ties dissolve them in the acid or alkali solution to achieve the purpose of rust removal.
Quality grade of metal surface pretreatment for stainless steel cable ties.
1. Manual or power tool rust removal, metal surface pretreatment quality level is designated as Level 2, represented by St2 and St3.
2. Spray or projectile rust removal, the quality level of metal surface pretreatment is designated as level four, represented by Sal, Sa2, Sa21/2, Sa3, and the quality level of flame rust removal metal pretreatment is designated as level one, represented by F1.
3. The quality level of chemical rust removal metal pretreatment is designated as Level 1, represented by Pi.
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