Phosphate-coated steel wire rope is a Chinese invention patent. Only by signing a contract to purchase and obtaining a patent license can you legally produce manganese-based phosphating wear-resistant coated elevator wire ropes. Goldman Sachs currently produces smooth steel wire ropes. Regarding elevator wire ropes, I don’t know whether to produce manganese-based phosphating wear-resistant coated elevator wire ropes in the future. The purchase of patents needs to be decided by the board of directors.
At present, manganese-based phosphating coated elevator wire ropes can achieve a fatigue life of more than 2 million times, while smooth elevator wire ropes can only achieve a fatigue life of 600,000 times. Manganese phosphate coated steel wire rope is the most advanced technology in the field of steel wire rope manufacturing in the world today. Fatigue tests have proven that the fatigue life of manganese phosphate coated steel wire rope is the longest among steel wire ropes of the same structure. Because manganese phosphate coated steel wire rope has With ultra-long service life, the average daily cost of manganese phosphating coated steel wire rope is only about one-third of that of smooth steel wire rope. It is an upgraded product of smooth steel wire rope. The type and weight of the phosphate coating are key technical indicators for manganese-based phosphating coated steel wire ropes. The coating weight must comply with the contract with the manufacturer. The way to identify the authenticity of manganese phosphate coated steel wire ropes is to test the type and weight of the phosphate coating.
The weight of the phosphate coating is the most important technical indicator of the manganese phosphate coated steel wire rope. A manganese phosphate coating of more than 15 grams/square meter can ensure the wear resistance of the manganese phosphate coated steel wire rope. With anti-corrosion capabilities, some companies that have purchased patent licenses have produced manganese-based phosphating coated steel wire ropes with a film weight of 20-30 grams/square meter, and have excellent fatigue resistance.
Split the manganese phosphate-coated steel wire rope into single steel wires, cut off about 500 mm in length, carefully clean the steel wires with organic solvents, and thoroughly clean the grease on the surface of the steel wires. Please pay attention to organic solvents It is flammable and explosive, and the operation must be standardized to prevent organic solvent deflagration accidents. Then just measure the film weight of the phosphating film according to the national standard, GB/T9792-2003 Determination of film mass per unit area of ??conversion coating on metal materials - gravimetric method. It is necessary to prepare the corresponding chemicals and an electronic balance for weight measurement, with a measurement accuracy of at least 0.001 grams.