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Moisture Locking
Xiang Jie lock doors and windows buy decoration accessories are also important - hardware, locks, bu by hi joiney
One, materials People buy locks, the locks were generally concerned that the surface is not durable or not be long before they rust or oxidation. This issue is related to the use of materials and Surface Treatment Problem.
From the durability point of view, the best materials should be stainless steel, especially for surface material, more use of the more bright. Its strength, corrosion resistance, color change. However, there are a variety of stainless steel, can be divided into ferrite and austenite. Magnetic ferritic stainless steel, commonly known as stainless iron, long time, the poor environment and will rust, only the austenitic stainless steel will not rust, differential solution is simple, using magnets to try to distinguish different.
Copper is the most widely used material for locks, and its mechanical properties, corrosion resistance and processing properties are good, and beautiful color, especially in forging brass handles and other decorative pieces lock, surface roughness, density Well, no air hole. Both the firm has rust, can be used 24K gold plated or gold, and other surface treatment, look magnificent, noble and generous, to the people Home Added color.
Zinc alloy material, its strength and ability he sent more rust, but its advantage is easy to parts made of complex patterns, especially in pressure casting. More complex patterns seen in the market lock has probably made of zinc alloy, consumers should carefully identify.
Steel, Good strength, low cost, but easy to rust, the internal structure of materials normally used for lock use, not suitable for external decorations.
Aluminum or aluminum alloy, common alloy (except Aerospace) soft and light, strength of materials than the bottom, but the ease of processing shape.
2, surface treatment Metal surface treatment is used to signify the power deposition (commonly known as electroplating), coating (called spray), chemical oxidation (color) or other processing methods or in part covered with a layer of protective film formation. The film is mainly from the corrosion effects, but also increase the beauty and durability of products, product quality is a direct measure of the merits of an important factor. Common method of measuring surface are: coating thickness measurement with a combined strength of both, salt spray and humidity test, the appearance inspection. Coating is the coating adhesion, hardness, moisture testing and visual inspection and other methods.
China Lock Introduce new standards Our new standards issued locks in June 2000, implemented in October 2000. The original lock has four national standard. (Including the GB8385-97 "exterior door"; GB8386-87 "marble mortise lock"; GB8387-"leaf mortise lock" and GB8388-87 "Ball Lock" in March 1999 to convert to QB / T3837-1999, QB/T3838-1999, QB/T3839-1999 and QB/T3840-1999) promulgated in 1988, but, with the continuous development of market economy, great changes have taken place in lock products. Enrich product variety, quality and a higher level. Existing national standards and professional standards can not meet the new situation, the requirements on quality and technology locks. In particular, China will soon join the WTO, economic globalization imperative, our door lock products must improve the grade and quality. With international standards in order to narrow the gap with developed countries, is conducive to eliminating trade barriers, increase export earnings, to promote the development of China's lock industry, participate in international competition. So the original lock standards must be revised, the State Light Industry Bureau, the national daily Hardware Standardization notice centers are issued a document, the four locks on the original standards were revised. And the original marble lock (SG205-80) with double tongue exterior door (GB8385-87) combined to increase the Metallic Twill (Tiger) exterior door lock to become the standard. Existing light standards enforced by the QB is the revised new standards.
New standards revised principles: on the basis of the existing standards can only increase, must not lower.
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