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Marine Accessories Maintenance Precautions
Jun 19, 2017

Marine accessories analysis of the use of ship accessories shackle use and maintenance precautions

1, before using the ship accessories shackle products, Marine Accessories be sure to check whether the appearance of the product cracks and the rated load of the product. Do not use overload.

 2, with the shackle supporting the use of sling specifications, type of choice: When the choice of shackle specifications, the load must be lifting the size, weight, shape, Marine Accessories and ready to use the lifting method and other common use of the coefficient Included in the calculation considerations, given the requirements of the ultimate working force, while the working environment, the type of load must be taken into account.

 3, no sign and inspection certificate of the shackle, is strictly prohibited put into use.

4, to ensure the safety of personnel. Marine Accessories In the lifting process, pay close attention to ensure the safety of personnel, must be warned in the dangerous state of the staff, if necessary, immediately withdraw from the dangerous zone. The hands or other parts of the body must be kept away from the sling to prevent injury when the sling is slackened.

5, shackle link to be a smooth vertical lifting, with angle of the cable, to consider the work load will be a corresponding change, the maximum angle can not exceed 60 °.

6, the correct storage shackles. When the shackle to complete the lifting operation, must be put back, the correct storage; if you no longer use, must be stored in a clean, dry, good ventilation conditions, room temperature, away from heat, can erode the appearance of gas, chemicals, Direct sunlight or other strong ultraviolet radiation.

1, visual inspection;

⑴ ﹑ visual surface should be no scars, Marine Accessories after finishing the main surface should be no drop, zinc gray ﹑ sticky slag ﹑ from the skin and leakage and so on.

⑵ ﹑ ﹑ ﹑ when the thickness of the coating is greater than the specified value, the surface of the coating to allow the existence of dark or gray color uneven areas, Marine Accessories wet conditions, storage of plating surface allows the presence of white rust.

2 ﹑ coating thickness inspection;

⑴: from the inspection batch randomly selected for testing the hot-dip galvanized plating parts to check; check the number of batches to determine how much the number of samples;

⑶: coating thickness is directly related to the corrosion resistance of the plating life, must meet the requirements GB / Z343-2005 in the marine accessories hot dip galvanized coating thickness requirements;

⑷: plating the amount of plating: steel surface area of zinc and (or) zinc - iron alloy coating of the total quality, expressed in g ㎡;

⑸: thickness of the coating: the surface of steel and zinc (and) zinc - iron alloy plating the total thickness of the um said;

⑹: the commonly used way to measure the thickness of a. Magnetic method ¸b. Weighing method;

⑺: magnetic method is a magnetic coating thickness gauge in each of not less than 10c square meters on the basic measurement surface, at least 5 measurement points measured thickness, Marine Accessories take the basic measurement of all measured points in the arithmetic mean of the measured value of the Basic thickness of the coating surface of the basic measurement surface. As long as the average value is not lower than the value required for the local thickness in Table 1 and Table 2, allowing the measured values on the individual measuring points to be lower than those in Table 1 and Table 2, the magnetic measurement method is most suitable for the on- QC; 

⑻: weighing method, also known as dezincification method, if the dispute when the arbitration method, according to GB / T13825 requirements, Marine Accessories according to the method of galvanized layer plating should be measured by the density of the coating (7.2g / Cm3) into the thickness of the coating, the method is a destructive test method, under normal circumstances should be non-destructive test method.

 ⑼: conversion between the plating area per unit area plating and the thickness of the coating GB / T13825 with the provisions of the weighing method can be measured per unit area of the plating coating, with g / ㎡, divided by the coating density (7.2g / Cm3) coating thickness can be converted into coating thickness