Equipment Slight Rust Removal And Painting Method

Regarding the surface cleaning before painting, generally one type of rust removal (sand blast cleaning) or two types of rust removal (power equipment) methods are used for rust removal. Specifically, the standard cleaning method is to clean the surface in accordance with Sa21/2 or St3 established by ISO8501-1. However, when painting the exterior of gas pipelines or gas storage tanks with serious corrosion, if ordinary surface cleaning methods are used, perforations may occur and gas leakage may occur. Therefore, the internal gas is basically removed with nitrogen after the gas is stopped. . However, as mentioned in the anti-corrosion of the branch pipe table, if the painting can be carried out without stopping the air, the painting operation will become simple and low-cost.

Therefore, MINGHE has developed a surface rust removal cleaning method (hereinafter referred to as "light rust removal painting method") that only leaves a thin layer of rust when removing rust, which can ensure a certain degree of anti-corrosion performance.

The so-called light rust removal painting method is to leave about 100 thick rust layer during the rust removal operation. If the thickness of the rust layer is less than 100, you can use a special primer with penetrating performance in the rust. If you apply a normal thick build paint on the primer, the anti-corrosion performance can be ensured even after 3000 hours of SST. This is because in the remaining thin rust layer below 100, the special primer can completely penetrate into the rust layer and inhibit the corrosion of the remaining rust.

The slight rust removal painting method is only applicable to painting treatment when the internal gas of energy transmission pipelines or gas storage tanks is not released. In addition, experiments have shown that when the thickness of the rust layer is greater than 100 or the thickness of the special primer is greater than the thickness of the standard coating, the anti-corrosion performance cannot be obtained.

When this method is applied to the actual painting construction, the thickness of the remaining rust layer is measured during the slight rust removal and cleaning process to confirm that the thickness of the remaining rust layer is below 100. Moreover, there are also water blasting methods for rust removal. For example, painting the outside of gas storage tanks and using water spray and sand blasting to remove rust can effectively remove rust on a large area. Not only does the cost of rust removal are low, but there is no danger of fire caused by sparks when power tools are removed. . However, the long-term durability of the light rust removal painting method for more than 3000 hours of SST has not been confirmed. Therefore, it is limited to use when ordinary surface rust removal operations cannot be used depending on the specific circumstances.

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Minghe Die Casting Company are dedicated to manufacture and provide quality and high performance Casting Parts(metal die casting parts range mainly include Thin-Wall Die Casting,Hot Chamber Die Casting,Cold Chamber Die Casting),Round Service(Die Casting Service,Cnc Machining,Mold Making,Surface Treatment).Any custom Aluminum die casting, magnesium or Zamak/zinc die casting and other castings requirements are welcome to contact us.

Under the control of ISO9001 and TS 16949,All processes are carried out through hundreds of advanced die casting machines, 5-axis machines, and other facilities, ranging from blasters to Ultra Sonic washing machines.Minghe not only has advanced equipment but also have professional team of experienced engineers,operators and inspectors to make the customer’s design come true.

Contract manufacturer of die castings. Capabilities include cold chamber aluminum die casting parts from 0.15 lbs. to 6 lbs., quick change set up, and machining. Value-added services include polishing, vibrating, deburring, shot blasting, painting, plating, coating, assembly, and tooling. Materials worked with include alloys such as 360, 380, 383, and 413.

Zinc die casting design assistance/concurrent engineering services. Custom manufacturer of precision zinc die castings. Miniature castings, high pressure die castings, multi-slide mold castings, conventional mold castings, unit die and independent die castings and cavity sealed castings can be manufactured. Castings can be manufactured in lengths and widths up to 24 in. in +/-0.0005 in. tolerance.  

ISO 9001: 2015 certified manufacturer of die cast magnesium, Capabilities include high-pressure magnesium die casting up to 200 ton hot chamber & 3000 ton cold chamber, tooling design, polishing, molding, machining, powder & liquid painting, full QA with CMM capabilities, assembly, packaging & delivery.

ITAF16949 certified. Additional Casting Service Include investment casting,sand casting,Gravity Casting, Lost Foam Casting,Centrifugal Casting,Vacuum Casting,Permanent Mold Casting,.Capabilities include EDI, engineering assistance, solid modeling and secondary processing.

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By Minghe Die Casting Manufacturer |Categories: Helpful Articles |Material Tags: Aluminum Casting, Zinc Casting, Magnesium Casting, Titanium Casting, Stainless Steel Casting, Brass Casting,Bronze Casting,Casting Video,Company History,Aluminum Die Casting |Comments Off