The spring hose clamp is a part that makes the spring steel band into a ring smaller than the outer circumference of the hose, and uses the tightening force of the closed state to evenly tighten the hose over the entire circumference. With the extension of time, the elasticity of the hose decreases, and the hose clamp adapts to the decrease of the elasticity of the hose by virtue of the elasticity of the spring steel belt, and can still maintain the tightness of the hose.

Use of spring hose clamps
spring hose clamps are mainly used for fastening water-cooled pipes, air pipes, oil pipes, and fuel pipes in automobiles. The inner diameter of the spring hose clamp is ?-?0mm, and the main specifications are hose clamps for water-cooled piping of ?0-?0mm. Two-piece spring hose clamps are used for high-demand piping such as oil pipes and fuel piping.
The industries that demand hose clamps are not only the automobile manufacturing industry, but also household appliance manufacturing, processing machinery manufacturing, and testing equipment manufacturing industries that use hose clamps in large quantities.
Design of spring hose clamp
The use of hose clamps began in the early 1970s. At the beginning, hand pliers were used to expand the diameter of the clamping part of the hose clamp so that it can be easily installed on the hose. Therefore, a large number of hose clamps are used in the automobile assembly line. In the mid 1970s, the pre-expanded single-handle hose clamp with accessories was used to simplify the operation on the automobile assembly line, but the unplugged hose clamp parts became waste and affected the environment. In this case, it is required to develop a new type of single-handle hose clamp without accessories. Nowadays, single-handle hose clamps without accessories are the mainstream products of hose clamps. The advantages of the single-handle hose clamp without accessories are that it has no waste (accessories) and reduces the burden of unplugging accessories, which meets the requirements of ergonomics.
spring hose clamp material
The material of Japanese spring hose clamp is special steel bright steel belt, and other countries adopt suitable materials in Japanese JIS standard, American SAE standard, European DIN standard, and Chinese GB standard. Among these materials are steel strips with elements such as V, Mn, and Cr added. Most of the spring hose clamps are austempered, and the hose clamp has the required hardness by adapting to the best heat treatment conditions of the material.
Surface treatment of spring hose clamp
The surface treatment of the spring hose clamp has two methods: coating and electroplating. The method with strong anti-rust force is coating method, and the method with beautiful appearance is electroplating method. Two methods can be selected.
The coating method is to add colorant pigments on the basis of organic resin or inorganic binder and other binder components to make paint, and coat the hose clamp with the paint for decoration and rust prevention. The coating method was adopted around 1980. At that time, the coating was mainly composed of metallic zinc and chromium, which improved the anti-rust ability of the hose clamp. In 2000, the European ELV Directive and the RoHS Directive were implemented, restricting or prohibiting the use of hexavalent chromium, mercury, lead, cadmium and other harmful substances. Coating methods containing hexavalent chromium were replaced by chromium-free anti-rust treatment methods.
The development direction of spring hose clamps
The material cost in the production of spring hose clamps accounts for a large proportion, so increasing the material rate and production efficiency of hose clamps can significantly reduce production costs. In addition, with the improvement of automobile performance, spring hose clamps that meet the new requirements of automobiles should be developed.