Hebei Qinghe Dezheng Auto Parts Co., Ltd. : Standard for inspection of automobile rubber hose (1)
Description:1, hose size measurement: inside diameter, outside diameter, reinforced layer outside diameter, wall....
1, hose size measurement: inside diameter, outside diameter, reinforced layer outside diameter, wall thickness, concentricity, inner and outer layer glue thickness, combined parts inside diameter, the new national standard and ISO increase the length and measuring point mark, stipulates the measurement method of the length of the hose without pipe joint and with all kinds of pipe joint.
2. Hydraulic test verification pressure test: check whether the hose and assembly will leak, deform and damage if it lasts for 30S-60S under the verification pressure. Pressure deformation test: keep 1 minute under the specified pressure (working pressure verification pressure or other pressure lower than the verification pressure) to measure the length and diameter of the hose, as well as the twist Angle and bending. Blast pressure test: measure the pressure when the hose bursts under the specified speed of pressure boost. Leakage test: keep it for 5min under the static pressure of 70% of the minimum burst pressure, and repeat it once to check whether it is leaking or damaged. Because the test often uses water, and the viscosity of the actual use of liquid is different, the burst pressure and leakage pressure measured at room temperature may be slightly lower.
This article is organized by Hebei Qinghe Dezheng Auto Parts Co., Ltd
