Idle valve to prevent rust damage preservation methods

Idle valve to prevent rust damage preservation: First, regular maintenance: a longer period of idle valves, should be regularly inspected, regular maintenance, to prevent valve corrosion and damage. For the idle time is too long valve, should be equipment, devices, pipes together with the pressure test before use. Second, the protection and protection: to prevent other objects from impact, artificial removal and demolition, if necessary, should be fixed valve activity parts, the valve packaging protection. Third, the anti-corrosion treatment: took out the stuffing box packing to prevent the stem electrochemical corrosion, valve sealing surface, stem, stem nut, machined surface and other parts, depending on the circumstances rust inhibitor, grease, paint Parts should be painted anti-rust paint. Fourth, with valve: valve missing parts, can not move to make up for the West, should be fitted with valves for the next step to create good conditions to ensure that the valve is in good condition. Fifth, clear the valve: The valve cavity should purge clean, no residual deposits and aqueous solution, the external valve should be wiped clean, no stolen goods, oil, dust. This article Keywords: valve

ABS plastic,full name acrylonitrile–butadiene–styrene copolymer,

Acrylnitrile butadiene Styrene copolymer has a good thermal and dimensional stability and high impact strength(also at low temperature).It is strong,shows a good scratch resistance and has a good dimensional stability .ABS Plastic can be used in temperatures ranging from -50'C to +70'C .it mainly have ABS SHEET,ESD ABS SHEET,FIREPROOF OF ABS SHEET,ABS+PC SHEET.

 

Classification:

ABS plastic according to impact strength can be divided into: ultra high impact type, high impact type, medium - resistant type and so on;

ABS plastic  can be divided into: injection, extrusion, pressure delay, vacuum and blow molding.

ABS plastic  can be divided into: general grade, heat resistance grade, plating grade, flame retardant grade, transparent grade, anti-static, extruding plate and pipe grade, etc.

 

Advantages:

1.Good mechanical strength, high impact strength

2.Resists scratching, Excellent abrasion resistance

3.Good electrical properties, moisture and creep resistance

3.High dimensional stability, good luster

4.Good chemical and stress cracking resistance to inorganic salt solutions, alkalis and many  acids(strong oxidizing acids is a exception).


Disadvantages:

1.Endurance in water ,endurance in corrosion of inorganic salt. But not endurance in organic solvent.

2.ABS Plastic is easily to cracked by the effects of the organic solvent.

3.Poor weather resistance, easily to change color and become brittle because of the sunlight.

 

Application:

1. Electronics & electric appliances: antenna socket, coil former, wiring board, convertor, speaker,connector, and other parts;

2. Food industry parts;

3. Building model, model mockup;

4. Electronic industrial parts, freezer and refrigeration industry;


 

Notes:

1. ABS Plastic is strict requirements for flame retardant grade ABS to prevent the decomposition of flame retardants.

In the start of the power, the cartridge should be cleaned with general grade ABS plastic  and then processed.

(point to stop for more than 20 minutes before the downtime), on the one hand must cut cylinder temperature below 100 ℃, on the other hand must be emptying the material inside the cylinder, and general level ABS cleaning cylinder rear can stop.

The purpose is to make flame retardant ABS not decomposed.

2. The use of reworked material for primary or secondary sex thousand net, without impurities, no decomposition of ABS plastic  reworked material, can be used directly after crushing, also can mix with the new material, the mixing ratio is generally not more than 25% of the new material, so as not to affect performance.

For more than 5 times more than 5 times or adding the fresh material with colorant, generally not mixed with the new material, mainly to prevent the color difference.

ABS Plastic must be dried and processed in accordance with the regulations, whether it be separately regenerated or mixed with new materials.

Combustion characteristics

 

Specification: the diameter of the ABS Plastic rod can be produced from 2mm to 250mm. The conventional length is 1000mm, and the length is unlimited.

The thickness of ABS Plastic sheet material can be produced from 0.3mm to 1.9mm, the normal width is 600mm, the width cannot exceed 1200mm, the length is not limited.

The thickness of plate can be produced from 2mm to 180mm, the usual specification of 2-10mm is 1000mm* 2000mm, and the commonly used specification of 10-180mm is 600*1200mm. ABS Plastic can also be customized according to requirements, and the width cannot exceed 1200mm, and the length is not limited

 

Color: beige or  white, can also be made black and color, and the color order is 500KG.


 

Modified varieties:ABS Plastic can be added to the fiberglass, copper powder and molybdenum disulphide to enhance the bar.

Add antistatic agent to the permanent antistatic electric bar, and the volume resistance value is between 6 to 9 power of 10.

Add flame retardant to flame retardant rod from UL 94V-0 to HB flame retardant grade. Other modification requirements are customized according to customer's actual use.

 

Product certification: ABS Plastic  most environmental certification reports and safety reports for raw materials, such as SGS report, CTI report, UL report, MSDS safety information, etc.

ABS Plastic Sheet

ABS Plastic Sheet,Antistatic Styrene Plastic Sheet,Esd ABS Plastic Sheet,Fireproof ABS Plastic Sheet

Dongguan Noegem Plastic Products Co.,Ltd , https://www.noegempLastic.com