The selection window locks analytical Before the choose and buy should consider

2009-11-16 11:26:38

1.material

When people buy lock locks are worried, generally not durable, or a surface will rust or oxidation. This problem is related to the use of materials and surface treatment.

From the perspective of durable, the best material should be used, especially stainless steel surface material, the brighter. Its good strength, strong corrosion resistance, color unchanged. But also have a variety of stainless steel, mainly divided into ferrite and austenitic. Ferritic stainless steel, stainless magnetic iron, time is long, the environment is also will rust, only the austenitic stainless steel wouldn't rust, identify way is very simple, try to identify with magnets.

Copper is the most widely used locks and its mechanical properties of materials, corrosion and processing properties are good and bright color, especially the copper forging handle and other decorative locks, smooth, density and porosity, sand holes without. Both strong and anti-rust, can be used with 24K gold or ShaJin etc all kinds of surface treatment, it is gorgeous, noble and generous, to the household of people add many colors.

Zinc alloy material, its strength and rust resistance sent many, but its advantage is easy to make complex pattern of the parts, especially the pressure casting. There have seen more complex pattern of lock is a possibility of zinc alloy, consumer should be carefully identify.

Steel, intensity, low cost, but easy to rust, general used locks, unfavorable use internal structure materials for exterior decoration.

Aluminum or aluminum alloy (aerospace, common with soft and light except), material strength, but relatively easy machining.

Second, surface treatment

Surface treatment is normally use metal electrical deposition (known as electroplating), coating (say), spraying chemical oxidation (shader) or other processing methods in parts surface coverage or form a protective coating. The membrane mainly corrosion protection, also increase durability of beautiful and products, product quality is directly measured is one of important factors. The measure of surface treatment methods are: the layer thickness measurement, adhesion in check, salt fog and damp test, inspection, etc. Coating in coating adhesion, hardness, damp test and inspection, etc.

In the new standard is introduced. The door

Our new standards issued lock in June 2000, oct. 2000. The original locks products 4 national standards. GB8385-97 (including the door; the GB8386-87 the billiard plug door; the core GB8387 - the blade and insert lock core GB8388-87 the spherical locks in March 1999 were transformed into QB/T3837-1999, QB/T3838-1999, QB/T3839-1999 and QB/T3840-1999) issued implementation in 1988, however, with the development of market economy, the door product has changed greatly. Products quality ceaselessly, improve continuously. The original national standard and professional standard has far cannot meet the new situation of the quality requirements of technical lock. Especially China's accession to the WTO, economic globalization, China is the grade of the product quality and the lock must be improved. With international standards, in order to narrow the gap between the developed countries, to eliminate trade barriers, increase the export, in order to promote the development of industries in China, locks and participate in international competition. So the original locks standards must be modified, national bureau of light industry, national daily hardware standardization to notify dispatch center respectively, the original standard four door has been revised. And put the billiard locks (SG205-80) and the double lock tongue (GB8385-87) merger, increase shuangkou (tiger) and become the door lock. Now that the light was executed standard QB revised the new standard.

The new standard revision principle is: on the basis of the original standard to improve, not only reduced.