With the increasing use of hydraulic joints in the market, the working conditions are becoming more and more complicated and demanding, and users are increasingly demanding anti-rust and anti-salt spray on hydraulic joints. So, how does Parker hydraulic joints deal with these harsh conditions? What is the unique secret of this layer of the Parker hydraulic joint, the galvanized layer?
With the increasing use of hydraulic joints in the market, the working conditions are becoming more and more complicated and demanding, and users are increasingly demanding anti-rust and anti-salt spray on hydraulic joints. So, how does Parker hydraulic joints deal with these harsh conditions? What is the unique secret of this layer of the Parker hydraulic joint, the galvanized layer?
The traditional gray-black "phosphating and oiling" (Znphr5f-DIN 50942) surface treatment method for carbon steel joints is an old and original way, which can only meet some primary and less demanding conditions. Meet the higher requirements now.
Later, there was a zinc plating process. The zinc plating has the following advantages: at least 8μm coating makes the anti-corrosion ability significantly improved; scratches or scratches are often avoided during the assembly process, and the galvanized layer is bonded to the carbon steel joint. In terms of body, it is a cathodic corrosion protection that prevents local corrosion and wear of the joint. However, the chrome plating process contains hexavalent chromium, which is a toxic metal element that can cause cancer in humans and causes long-term damage to the environment. As early as 2007, the EU countries have banned all metal galvanizing from using hexavalent chromium. However, some joint workshops in China are still in use.
The silver-white surface produced by CF (no hexavalent chromium galvanizing) treatment process is more beautiful, and CF (no hexavalent chromium galvanizing) surface treatment can best meet various working conditions. Secondly, CF (no hexavalent chromium galvanizing) treatment process avoids pollution during the manufacturing process and meets the requirements of relevant regulations, such as the European "EV" directive.
As a leader in the industry, Parker hydraulic joints used CF (no hexavalent chromium galvanizing) surface protection as early as 2005, and conducted corrosion experiments in continuous and various simulated conditions, eg according to ISO 9227 ( The salt spray test of 5% NaCl solution showed that the average corrosion resistance of CF (no hexavalent chromium galvanizing) treatment surface was 500 hours without white rust, and 700 hours without excellent red rust test. Parker hydraulic couplings will ensure that your hydraulic lines are performing well and safely under any harsh conditions.
Litian Electromechanical "target=_blank> Electromechanical is a senior distributor of Parker pipe fittings. It supplies high quality original Parker hydraulic joints all the year round. The specifications and models are complete, the stock is sufficient, the price is good, the service quality is good, and it can be selected according to your technical requirements. , installation, distribution of one-stop service.
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