To measure the diameter of the wire rope, you need to use a wide-mouth digital micrometer. The wide mouth of the micrometer must span the width of at least three strands.
Domestic production of steel wire rope varieties are as follows: 1. Phosphated coated steel wire rope (Chinese patent). The steel wire is treated with manganese and zinc-manganese phosphating. The wear resistance and corrosion resistance of the steel wire are comprehensively improved, and it is not easy to Wear and resistance to corrosion greatly improve the fatigue life of the steel wire rope. The fatigue life is 3-4 times that of the smooth steel wire rope with the same structure (under comparable conditions in the laboratory), far exceeding that of the imported steel wire rope. It is recommended to do a comparative fatigue life test yourself. Phosphate coated steel wire rope It is fully replacing all types of smooth steel wire ropes, and can also be used as a replacement for galvanized steel wire ropes that are first plated and then pulled out with a thin zinc layer (corrosion resistance can be tested through a salt spray test). It has a longer service life, lower unit cost, and reliable quality stability. According to the current approximate price of steel wire rope market, the price of manganese phosphating coated steel wire rope is about 1.4-1.6 times that of smooth steel wire rope, and the service life extension is much higher than the price increase. Therefore, phosphating coated steel wire rope The average daily usage cost of layered steel wire rope is only 30-45% of that of smooth steel wire rope, making it lower in cost and more cost-effective.
2. Galvanized steel wire rope, including hot-dip galvanizing and electro-galvanizing. Generally, hot-dip galvanizing has a thick zinc layer and electro-galvanizing has a thin zinc layer.
3. Stainless steel wire rope, with Mainly made of 304 or 316 stainless steel, which has excellent anti-corrosion effect but is expensive
4. Plastic-coated steel wire rope, based on carbon steel wire rope, the outer layer is coated with polyethylene, polypropylene or nylon
5. Smooth steel wire ropes have a short service life and the market demand has dropped sharply. They will be completely eliminated by phosphate-coated steel wire ropes.
6. Steel wire ropes for marine engineering moorings
7. Cable wire ropes
For lifting machinery used in atmospheric environments, manganese-based phosphate-coated steel wire ropes are preferred , hot-dip galvanized-phosphating double-coated steel wire ropes are preferred in heavy corrosive environments, and offshore steel wire ropes are preferred in seawater. When purchasing, please note that the name of the steel wire rope, such as phosphate-coated steel wire rope or 316 stainless steel wire rope, must be indicated on the purchase invoice to prevent unscrupulous companies from infringing upon their legitimate rights and interests. In addition, patented products generally have a patent number spray-marked on the outer packaging of the steel wire rope. , the warranty document should have main technical indicators, such as the type of phosphate coating and film weight (the weight, wear resistance, corrosion resistance, etc. of the phosphating film have an important impact on the service life of the steel wire rope), and are for reference only.