Quality Doesn’t Cost…It Pays!
In furtherance to our previous Blog, which exhibited the Advantages of Using Branded Materials in Silicone Hoses, the other factors that go a long way in increasing the life of the Hoses in the field are as important. So getting the raw-materials right is a job half done.
- Wrapping: Since the Hoses are hand-built, the quality of training to the operators, the documentation that they have to work with, their morale, etc. are as important as any other aspect of the Hose. Once the hoses are cured and post-cured, you can only inspect it from outside. But it’s what inside that matters.
- Cleanliness of the Shop-floor: If the house-keeping (5S) is not maintained, dust or other foreign particles can enter into the Hose (between the fabric layers), which will be very difficult to Inspect and Detect at Quality Assurance.
- Post-curing (only applicable for peroxide-cured Rubber and Silicone) of the Hoses. This can be avoided by adding acid-scavengers/anti-blooming agents; however, this is not recommended. Experts globally prefer post-curing for 4 or more hours at high-temperature, with fresh-air circulation. Unfortunately, many companies avoid this step to cut costs.
- High-Temperature Silicone Grades: A lot of manufacturers produce Silicone Hoses from regular general-purpose (precipitated-silica based) Silicone Rubber, for usages where the continuous working temperature exceeds 200C /392F; however this is not recommended. For permanent exposure to higher temperatures, high-performance grades are available.
- Primed vs. Unprimed fabric: All the high-temperature (meta-aramid) fabrics we use at Shore Auto Rubber Exports Pvt. Ltd, are “Primed”. Please see our blog (with videos), to see the difference in ply-adhesion (Rubber to Fabric), between ‘Primed’ and ‘Unprimed’ fabrics.
- SS-rings: If the Rings used for CAC hoses are of bad quality (not stainless); or the welding is weak, again, this can result in pre-mature field failures.
- SS-wire: For out Flexible Convoluted Hoses, we use “Stainless-steel” wire. Many Hose producers use normal steel which is vulnerable to corrosion/rusting.
So when you look for a source for your “Wrapped” Hoses, please also consider the “Cost of Ownership”, and not just the “Cost”.
IATF16949:2016, ISO9001:2015, OHSAS18001:2007 & ISO14001:2015 Certified