M10 hot-dip galvanized screw bolt

A full-threaded, hot-dip galvanized technology, applied in bolts, threaded fasteners, screws, etc., can solve the problems of short corrosion resistance life and limited use occasions, and achieve long corrosion resistance life, large limitations, and coordination. good effect

Inactive Publication Date: 2014-12-24
JIANGSU DONGQI STANDARD PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the above-mentioned GB13912-2002, the minimum coating thickness of M10 full-threaded bolts calculated by the above-mentioned GB13912-2002 is 35 μm, and the average thickness is 45 μm. M10 hot-dip galvanized full-threaded bolts can only be used for 9 to 30 years in heavy industrial areas, coastal areas and other atmospheric exposure environments. , the corrosion resistance life is short, and the use occasions are limited

Method used

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  • M10 hot-dip galvanized screw bolt
  • M10 hot-dip galvanized screw bolt
  • M10 hot-dip galvanized screw bolt

Examples

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Embodiment 1

[0021] Embodiment one: see figure 1 As shown, a M10 hot-dip galvanized fully threaded bolt is formed from raw materials through drawing, cutting, piercing, hexagonal cutting, thread rolling, and galvanizing.

[0022] The raw material is cast iron wire with a diameter of 9.5 mm.

[0023] The diameter of the cast iron wire after drawing is 8.6-8.63mm.

[0024] The diameter of the drawn cast iron wire after pier head is 8.72-8.75mm.

[0025] The external thread diameter of the M10 hot-dip galvanized full-thread bolt is composed of two parts: the size of the external thread before plating and the thickness S of the galvanized layer. The external thread diameter includes the external thread major diameter D and the external thread minor diameter d. The external thread Dimension D before plating of major diameter D 前 9.626 ~ 9.695mm, galvanized layer thickness S D 54~65μm, size D after plating 后 It is 9.68 ~ 9.76mm.

[0026] Dimension d before plating of the minor diameter d o...

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Abstract

The invention discloses an M10 hot-dip galvanized screw bolt. The diameter of an external thread of the M10 hot-dip galvanized screw bolt consists of a pre-galvanization size of the external thread and a galvanized layer thickness, and the galvanized layer thickness ranges from 54 microns to 65 microns. Since the galvanized layer thickness of the M10 hot-dip galvanized screw bolt is 54-65 microns, the M10 hot-dip galvanized screw bolt is high in corrosion resistance, long in service life and low in limitation on use occasions. Further, the M10 hot-dip galvanized screw bolt has the advantages of excellent galvanization process, large basic diameter, strength improvement, smoothness of after-galvanization surface and fitness with nuts.

Description

technical field [0001] The invention relates to a full-thread bolt, in particular to an M10 hot-dip galvanized full-thread bolt. Background technique [0002] Hot-dip galvanizing, also called hot-dip galvanizing and hot-dip galvanizing, is an effective metal anti-corrosion method, mainly used in metal structure facilities in various industries. The hot-dip galvanizing process is to immerse the metal material or parts with a clean surface in the molten zinc solution at about 500 ° C, and use the physical and chemical reactions at the interface to form a layer of metal zinc on the surface, so as to achieve the purpose of anti-corrosion. Hot-dip galvanizing process: finished product alkaline washing-water washing-weak acid washing (acid-base neutralization)-adding auxiliary plating solution-drying-dip plating-primary cooling-secondary cooling-drying-quality inspection-hot-dip galvanizing completed. [0003] In view of the characteristics of the current hot-dip galvanizing prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B35/00F16B33/06F16B41/00
Inventor 徐倚山
Owner JIANGSU DONGQI STANDARD PARTS
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