[China Aluminum Industry Network] Aluminum and aluminum alloys are the second largest metal materials that are used second only to steel because of their easy processing and excellent physical and chemical properties.
The extensive use of aluminum and aluminum alloys is mainly based on its three major properties:
1, light weight (its weight is about 2.7);
2. High mechanical strength can be obtained after proper alloying and heat treatment;
3, as well as pure metal has good corrosion resistance.
Other properties of aluminum and aluminum alloys are:
Excellent thermal conductivity, conductivity and reflectivity; its ductility is strong and low processing costs; due to its non-magnetic, high value of waste recovery and its non-toxic and colorless corrosion products, it can be widely used In the chemical and food industry. At the same time, aluminum can get other superior performance after different treatment.
In general, the choice of metal in any case is based on its mechanical properties, physical and chemical properties and its price. Since light metals are expensive, they must be considered economically when they are selected. For example, strength requirements should be considered together with lighter weight and better corrosion resistance. In addition to meeting the mechanical properties, the choice of a special alloy still requires consideration of the process method and conditions of use. In so many metals, aluminum and aluminum alloys meet the requirements of most industries for metal performance. However, aluminum alloy materials have low hardness and poor wear resistance, and abrasion damage often occurs. Therefore, before the aluminum alloy is used, it is often required to go through a corresponding electroplating process to meet its adaptability and safety to the environment.
Industrial aluminum and aluminum alloys all require protective measures to improve their corrosion resistance. There are many methods for surface treatment of aluminum metal, such as anodizing, chemical conversion film, electroless nickel plating, organic coating, corrosion inhibitor treatment, etc., but the method of aluminum surface treatment needs to be selected according to the following conditions:
1, the use of the environment, that is, exposure to indoor, outdoor, marine atmosphere and easy to produce internal stress and other environments.
2, the base metal, that is, the choice of an alloy for surface finishing processing adaptability.
3, for decorative purposes, such as dyeing anodizing, paint color and reflective and so on.
4, for special purposes, such as the need for hardness, wear resistance, insulation and other additional requirements.
5, processing costs and process is tedious.
45C Material Rebar Coupler is one type of coupler made by raw material 45# Solid carbon steel. The strength can reach the tensile test of HRB335, HRB400 and HRB500 and equivalent rebar.
Rebar parallel thread splicing coupler is applied to rebar mechanical splicing for concrete construction projects, and it mainly connect HRB335, HRB400 and HRB500 hot rolled ribbed bars with diameter 12-50mm.
We have test report with 45C material Rebar Coupler, the Rebar Coupler Joint performance has reached JGJ107-2010standard for the Grade I splicing rebar joint.
45C Material Rebar Coupler
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