More than 20 years' experience in hose field.
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More than 20 years' experience in hose field.
The lowly welding hose is usually under appreciated and overly abused. Its users are dragging it through every kind of muck and/or using it for pulling equipment around.
Why You Should Care About Your Welding Hose? | PASSIONHOSE
The lowly welding hose is usually under appreciated and overly abused. Its users are dragging it through every kind of muck and/or using it for pulling equipment around. It's stepped on, driven on, spilled on, and left on.
But because the hose is spending its life on the ground and doing its job, you can easily forget to be respecting its power: it's a game changer.
There are a number of things the welder must be doing to ensure the safe use of welding hoses: turning and shutting it off; storing it; it's working environment; and handling the hose. But, this email is going to be about why it matters what type of rubber is in your welding hose. One of the characteristics of rubber hose is permeation.
Once these permeated gases enter into the environment, your next worry is: are they building up in an area? If these gases are allowed to build up then it can lead to explosions or dangers for breathing. Each rubber hose is going to have a certain resistance to permeation. For the longest time welders have been using acetylene for fuel gas. Acetylene has been working well; used at low pressure, it has little effect on the composition or construction of the hose. But acetylene is no longer the dominant fuel gas. New gases are being developed to replace acetylene. With these new gases come changes that affect the welding hose. The new gases are being developed based on specific hydrocarbons or a mixture of hydrocarbons. These special compounds are creating a different effect on rubber hoses than acetylene. In fact, the precise effect hasn’t been determined. In addition, the new gases are running at much higher pressures. Acetylene will max out at (15psi) but new gases can be running at (40psi). So, the hose being made for acetylene is not designed for the new gases. There are two grades of welding hose for acetylene. Grade R hose is the most popular and cheapest. Grade R is only for acetylene. The tube and cover are not flame or oil-resistant. Grade RM is only for acetylene and its cover is oil and flame-resistant. But the tube is not oil or flame-resistant. Because of permeation and the higher pressures of new fuel gases, Grade R and RM should not be used. Grade T should be used when the fuel gas isn't acetylene, but acetylene can be used (which is why some gas equipment manufacturers have put T-grade hoses in their kits). The benefits of Grade T are the tube and cover are flame and oil-resistant. Plus it has a self-extinguishing tube and covers providing external and internal protection against adverse conditions: e.g. such as hot slag, and flashbacks.
So, if your fuel gases are not acetylene then you need to be checking what Grade your welding hose is.
Hangzhou Paishun Rubber And Plastic Company, a manufacturer founded in 2007, own our general headquarters in the beautiful historical city of Hangzhou.
