In recent years, with the continuous development of industries such as automobiles, petroleum, coal mines, chemicals, machinery, national defense, aerospace, etc,High-pressure steel wire braided hoseThe application is becoming increasingly widespread. Due to increasingly stringent usage conditions and constantly improving technical requirements for rubber hoses, there will always be some quality issues. Below, Jiayuxing will provide you with a detailed introduction!

1. Hemp noodles

(1) Quality issue: There are small particles distributed on the surface of the rubber hose, with a large quantity.

(2) Cause analysis:

① The rubber material contains rubber particles, which are crushed and evenly dispersed into the rubber material;

② For sulfur free rubber, it is mainly due to too long internal mixing time, too high temperature and too much carbon black gel;

③ Sulfurization of rubber material is mainly caused by the burning of rubber material under long-term high temperature conditions;

④ Or mixed with burnt rubber material.

(3) Solution:

① Strictly control the mixing time and temperature;

② Strictly control the roller temperature and sulfurization method during the sulfurization process:

③ Before hot refining and extrusion, it is necessary to strictly inspect the rubber mixing machine and extruder for any residual rubber material; ④ Each batch of rubber material must be strictly labeled with the material name, time, weight, and cleaned thoroughly.

2. Loose mouth

(1) Quality issue: After cutting, the steel wire ends become loose.

(2) Cause analysis:

① The rigidity of the steel wire is too high:

② Insufficient spindle tension;

③ Poor adhesion or insufficient stretching of the adhesive;

④ Separation of sulfurized internal adhesive and steel wire layer;

⑤ The thickness of the outer adhesive is thin and the tensile stress is too low.

(3) Solution:

① Replace with thinner steel wire;

② Increase the tension of the spindle;

③ Improve the stickiness and concentration of the adhesive;

④ Control the vulcanization time;

⑤ Increase the tensile stress of the external adhesive.

3. Uneven outer diameter size

(1) Quality issues:

① Uniform steel wire layer and uneven outer diameter of rubber hose;

② The steel wire layer is uneven and the outer diameter is also uneven.

(2) Cause analysis:

① Uneven outer diameter of the packaging and uneven dispersion of the adhesive lead to uneven expansion and uneven water cloth tension;

② Uneven bottom pressure, woven with adhesive backing, and two layers of pipe with one layer woven too tightly.

(3) Solution:

① Improve the external adhesive process, increase the dispersion of the adhesive material, and adjust the tension of the water cloth;

② Improve the bottom pressing process and enhance the internal adhesive stiffness The density of sexual or frozen internal glue and weaving should be reasonable.

Due to the differences in equipment, processes, and personnel levels among various rubber hose enterprises, the problems and solutions that arise are not entirely the same, and require specific analysis of each problem. Production enterprises must strictly follow the process regulations to avoid quality defects caused by human factors, otherwise irreversible economic losses and even accidents may occur. Therefore, the consistency of quality must be highly valued.