Tire aging gas nozzle can cause tirePosted by in China Supplier Information
Recently, the well-known rating agencies–quality (Beijing) credit quality assessment Centre Ltd, China quality Association, jointly issued the domestic tire industry quality ratings for BBB, warning color is yellow.
According to reports, the tire quality problems are pads valves and tyre adhesion strength, elongation, strength properties, specify allowable deviation coefficient of friction, as well as tire marks and other irregularities or dissatisfaction.
In recent years, domestic automobile tire product quality, overall healthy upward trend, but increases in General. 2011-sampling quality of automobile tires pass rate above 95%, quality rate was higher, however, tire quality in various regions there are some differences.
Why a valve can affect tire quality rating?
Has over 20 years experience of Ningbo Yinzhou Xinghua Metal Products Factory believes that this is because the valve is small, but they can affect driving safety.
It is understood that the valve when the wheel is rotated, under the influence of centrifugal force deformation, such as 195/70R14 when the tires at 100 km per hour, valve is required to bear some 1.7kg disturbance force if tire driving 50,000 kilometres, valve varies the wheel turning 25 million times.
Most of the Tyre valve rubber products, when the rubber becomes deep red, then its already aging to ensure good air-tightness, so the owners each time when changing tires, must replace the valve.
For more security considerations, at present, the high-end tires are generally in the market have started to use aluminum valves, compared with rubber valves, aluminum can to a large extent this extended time. Even so, owners on the maintenance and repair of valves is also very seriously, because the aging valves and makes the car slow leak, auto grind damage or puncture.
It is understood that the involved people’s livelihood interests of industry quality and credit risk rating, from highest to lowest are divided into four grades a, b, c, d, and each level based on risk scoring are different, classified as AAA, AA, a, BBB, BB, b, CCC, CC, c, d, x-class, and the “+” and “-” fine tuning.