Stainless steel capillary tube is a kind of hollow stainless steel pipe. It is more difficult for different types of production process technology. The use of stainless steel capillary tubing: automatic instrument signal tube, automatic instrument wire protection tube; precision optical ruler line, industrial sensor, electronic equipment Line protection tube; safety protection of electrical lines, protection of thermal instrumentation capillary tube and internal support of air core high-voltage cable.

Stainless steel capillary pipe characteristics: good softness, corrosion resistance, high temperature resistance, abrasion resistance, tensile strength, water resistance and excellent electromagnetic shielding performance. stainless steel hoses can be bent freely into various angles and radii of curvature, with the same flexibility and durability in all directions; flexible between stainless steel hose pitches, good flexibility, no clogging and stiffness The stainless steel capillary has a certain tensile force to prevent the damage of the hose from exposing the line laid inside the hose, and the axial tensile force can withstand more than twice the nominal inner diameter.
The production of stainless steel precision capillaries tubing is mainly divided into nine steps:
1. Cut off various small tubes.
2. For the cutting ends of various precision small tubes and sharpening.
3, for a variety of small tube expansion and shrinkage processing.
4, for a variety of precision tube bending forming processing.
5, micro-hole processing on the side of various small tubes.
6, for a variety of small tube welding assembly polishing process.
7. Staged compression and expansion processing of various precision thin tubes
8. Multi-station stretch forming of various tubular products.
9. For the porous part wall of the pipe fittings
Stainless steel precision capillaries should be noted during production:
Whether the annealing temperature can reach the regular temperature. Stainless steel heat treatment is generally accepted by solid solution heat treatment, which is commonly referred to as “annealing”, and the temperature is limited to °C Japanese specifications. You can also look through the annealing furnace to see that the stainless steel tube in the annealing zone should be in an incandescent form, but it does not exhibit softening and sagging. Annealing atmosphere. Normally, pure hydrogen is used as the annealing atmosphere, and the purity of the atmosphere is preferably above. If another part of the atmosphere is an inert gas, the purity can be lower, but it is absolutely impossible to contain too much oxygen and water vapor.
Furnace sealability. The bright annealing furnace should be blocked, and the outside air should be blocked by hydrogen as the maintenance gas, as long as one exhaust port is used to discharge the discharged hydrogen. Introspective methods can be used to smear the cracks in the joints of the annealing furnace with Panyu water. It is easy to run the gas. The local area where the annealing furnace enters the pipe and the pipe is local. This local seal is particularly easy. Wear, always change often.
Maintain gas pressure. In order to avoid the appearance of micro-leakage, the maintenance gas in the furnace should adhere to the necessary positive pressure. If it is hydrogen maintenance gas, the above requirements are generally required. Water vapor in the furnace. On the one hand, it can reflect the boring data of the furnace body. For the first time, the furnace body data must be dried. Secondly, the stainless steel pipe entering the furnace can leave too much water stain. If there is a hole in the special pipe, do not leak into it. Otherwise, the atmosphere of the stove will be completely destroyed.