Valve corrosion is the main cause of valve failure. Chemical corrosion and electrochemical corrosion are two forms of valve corrosion. The corrosion rate of the valve depends on the temperature, pressure, and chemical properties of the valve flow stop valve. Once the valve seal is corroded, it needs to be repaired or replaced. The corrosion of the valve cannot be completely eliminated. We can do a good job of corrosion treatment through technical means and effectively reduce the corrosiveness of the valve.
First of all, to understand the corrosion rate, the corrosion rate is the thickness of the body material consumed per unit of time. The corrosion rate can be used to determine the useful life of the valve, and whether there is excessive corrosion of the valve, and whether there is a problem with the selection and use of the valve.
1, complete corrosion resistance: corrosion rate is less than 0.001 mm / year;
2. Extreme corrosion resistance: Corrosion rate 0.001 to 0.01 mm/year;
3, corrosion resistance: corrosion rate of 0.01 to 0.1 mm / year;
4, still corrosion resistance: corrosion rate 0.1 to 1.0 mm / year;
5, poor corrosion resistance: corrosion rate of 1.0 to 10 mm / year;
6, not corrosion: corrosion rate greater than 10 mm / year.
What are the measures to prevent corrosion in the valve manufacturing and design process?
1, the first is the selection of materials This is the most important factor in preventing valve corrosion. Under normal circumstances, water, oil, and gas are usually cast steel valves, if you have a corrosive medium such as acid and alkali, you must choose stainless steel, generally controlled at a temperature below 200 degrees, stainless steel in the medium will produce a passivation film, prevent further corrosion. The highly corrosive medium requires the use of a super corrosion-resistant alloy material at high temperatures. The medium is reducible, and the stainless steel material containing Mo is selected; the medium is oxidizing and the stainless steel material containing Cr is selected.
2, the surface coating paint coating valve surface is also commonly used anti-corrosion means. Elastomeric paint is sprayed on the surface of the elastic seat gate valve.
3. The lining material is used to isolate the medium from the valve body flow path. The lining material includes lining engineering plastic, lining natural rubber and various synthetic rubbers. It can only be used at lower pressures and reduced operating temperatures.
4, the surface plating valve surface chrome plating, nickel plating, copper plating can also effectively control the effect of corrosion.
Sanjing Valve specializes in producing high and medium pressure valves, electric valves, pneumatic valves, power station valves, high temperature valves, American standard valves, forged steel valves, stainless steel valves, hydraulic control valves, etc. Professional solutions include design, customization, complete sets, operations, and services. We are always committed to the leader in China's valve industry and provide you with the latest valve knowledge, best service and technical consultants. If you have any questions, you can call us and we will do our best to provide you with quality service. We are determined to become the world's China valve manufacturer
Article from: Yongjia Sanjing Valve Co., Ltd.
Barbeque Accessories
A BBQ is a must in summer. When the weather is nice, it's great to have a BBQ outside. There are many different kinds of
BBQs, such as hot dogs, meatloaf, chicken wings, lamb kebabs, corn, groundnuts, and vegetables (peppers, mushrooms,
onions, aubergines, etc...). Just thinking about it makes your mouth water. It's so good! Here are some of our best grilling tools!
1. Lid for melting Cheese cheese
Features.
Quickly melts cheese on burgers or pizzas
Rotating aluminium dome absorbs heat to melt the cheese without overcooking the meat
Grills burgers faster to save time on the grill
9" diameter
With this cover, you can better melt the cheese on the patties and cook them faster in less time. It also allows for more
concentration in the fire, allowing the grilled food in the cover to cook faster, which can save time.
2. BBQ brush specifically for cleaning the grill
Features.
3 brushes in one - clean the same area 5 times faster than a conventional brush!
It covers a large enough area to clean the top, bottom and sides of all grill grates
Features a high-quality stainless steel brush: easily removes food, grease and debris from all types of grill grates
without scratching or damaging the surface
It's a good idea to clean the grill before eating, so that you have a clean grill to grill your food on and it doesn't
stick to the grill too much, this grill brush easily removes food crumbs, grease and other debris from the grill grates.
3. Mould for making mince pies on the barbecue
Features.
Has a non-stick coating and is easy to clean
A great tool for making quick burger patties
In addition to the patties, you can also add other ingredients such as bacon, onions, tomatoes, pepper and cheese.
It's easy to prepare meat for the barbecue, it's very easy to press the meat into the box, fill it up, put the lid on firmly
and it's ready for the barbecue. With it you can easily make the grilled meat filling you want to eat, as you can put
as many ingredients as you want in it and make all kinds of meat fillings: chicken fillings, beef traps, meat and
vegetables mixed together traps, etc. There are infinite combinations.
4. Tongs for the barbecue
Long and durable barbecue tongs are very useful when grilling, as they allow you to keep a distance from the flame
of the grill without burning your hands. It's also very handy to use to turn over, for example when grilling chicken
wings you need to turn them the other way so that both sides are grilled, you can use it to turn over and keep a
certain distance from the grill.
We also have a lot of quality barbecue accessories, so what are you waiting for, hurry up with your enquiry and
wait for your order.
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