The surface treatment of steel structure bolts is often divided into two ways, one is hot-dip galvanizing, which is a relatively common ancient way of galvanizing, and the other is Dacromet. The conventional galvanizing method is usually hot-dip galvanizing on the surface of steel structure bolts, It can not only ensure that the bolt is not corroded in the effective time, but also ensure the quality of the project. Dacromet is much more expensive than hot-dip galvanizing. This kind of Dacromet treated steel structural bolts can last several decades longer than hot-dip galvanizing. This specific time should be operated according to the actual situation.

體現(xiàn)在鋼結構螺栓所處在的環(huán)境中，有一些惡劣的環(huán)境會造就有一些螺栓本來有效年限能夠達到50年，實際使用不到一般就要更換其固定的螺栓了。這就要根據(jù)實際的情況下選擇適合自己表面處理的螺栓了。

Reflected in the environment of steel structure bolts, there are some bad environment will make some bolts have been valid for 50 years, the actual use of less than generally need to replace the fixed bolts. This is based on the actual situation to choose suitable for their own surface treatment of the bolt.

其他常見的螺栓表面處理：

Other common bolt surface treatment:

一，緊固件的電鍍緊固件的電鍍就是指將緊固件中必須被電鍍的一部分滲入特殊的溶液中，溶液里會帶有一些堆積的金屬材料化學物質(zhì)，那樣在以電流量根據(jù)溶液后，溶液內(nèi)的金屬材料化學物質(zhì)溶解并粘附在緊固件的滲入一部分上。緊固件的電鍍一般包含熱鍍鋅、銅、鎳、鉻、銅鎳合金等。

1、 Electroplating of fasteners electroplating of fasteners refers to the infiltration of a part of fasteners that must be electroplated into a special solution, in which there will be some accumulated metal material chemicals. In this way, the metal material chemicals in the solution will dissolve and adhere to the infiltrated part of fasteners after the current is applied to the solution. Electroplating of fasteners generally includes hot-dip galvanizing, copper, nickel, chromium, copper nickel alloy, etc.

二，緊固件的熱浸鍍鋅緊固件的熱浸鍍鋅是將碳素鋼成分的緊固件滲入到關注度約為510℃的熔化鋅的鍍槽體，那樣緊固件表面上的鐵鋅合金材料會變化為鈍化處理鋅，進而得到表面處理實際效果。緊固件的熱浸鍍鋅價錢要高過電鍍，約為1公斤1.5到2元。

2、 The hot-dip galvanizing of fasteners is to infiltrate the carbon steel fasteners into the molten zinc plating bath with a degree of concern of about 510 ℃, so that the iron zinc alloy material on the fastener surface will change to passivation treatment zinc, and then get the actual effect of surface treatment. The price of hot-dip galvanized fasteners is higher than that of electroplating, which is about 1.5 to 2 yuan per kilogram.

三，緊固件的機械設備鍍緊固件的機械設備鍍，是指采用特殊的物理和有機化學方法，用涂層金屬材料的粉末，對緊固件的表面進行沖擊，如用涂層金屬材料按冷焊的方式，在緊固件表面形成鍍層，達到表面處理的實際效果。緊固件的機械設備鍍關鍵適用螺絲、螺絲帽和密封墊等配件

3、 Mechanical equipment plating of fasteners mechanical equipment plating of fasteners refers to using special physical and organic chemical methods to impact the surface of fasteners with the powder of coated metal materials, such as using coated metal materials to form coating on the surface of fasteners by cold welding, so as to achieve the actual effect of surface treatment. The key parts of mechanical equipment for fasteners are screws, screw caps and gaskets