Surface treatment device and process for bolt after phosphorization

Abstract

The invention discloses a surface treatment device and process for a bolt after phosphorization. The process comprises the following steps that S1, a bolt workpiece is placed in a cleaning device, various impurities such as dust and oil stains on the surface of the bolt workpiece are fully cleared away through a cleaning agent, the bolt workpiece in the cleaning device is fully stirred through a stirring device, the cleaning agent is discharged, washing is repeatedly carried out through clean water, and then the water is drained; the bolt workpiece can be subjected to secondary coating in thestep S4, and the surface of the bolt workpiece is coated with lubricating oil liquid on one side by being immersed in the lubricating oil liquid; and then the bolt workpiece is heated through a dryingdevice in the step S5, and the oil liquid coated on the surface of the bolt workpiece for two times can be fully attached to the surface of the bolt workpiece. According to the process, the quality parameters of the bolt workpiece is improved, it is guaranteed that a low friction coefficient is still guaranteed when the bolt workpiece is used without oil immersion, the using quality is stable, and the service life of the bolt can be conveniently prolonged.

Description

technical field [0001] The invention relates to the technical field of bolt processing, in particular to equipment and technology for surface treatment of bolts after phosphating. Background technique [0002] A bolt is a cylindrical threaded fastener with a nut. It is a type of fastener consisting of a head and a screw (a cylinder with external threads). It needs to be matched with a nut to fasten and connect the two parts. A part with a through hole, this connection form is called bolt connection, if the nut is unscrewed from the bolt, the two parts can be separated, so the bolt connection is a detachable connection, water wax is a kind of will reduce The lubricant dissolved in the water-based carrier, coated on the surface of the workpiece, is heated and baked to remove the water-based carrier in the water wax, so that the friction reducer adheres to the surface of the workpiece, thereby playing the role of friction reduction and lubrication At present, most of the auto ...

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Problems solved by technology

[0002] A bolt is a cylindrical threaded fastener with a nut. It is a type of fastener consisting of a head and a screw (a cylinder with external threads). It needs to be matched with a nut to fasten and connect the two parts. A part with a through hole, this connection form is called bolt connection, if the nut is unscrewed from the bolt, the two parts can be separated, so the bolt connection is a detachable connection, water wax is a kind of will reduce The lubricant dissolved in the water-based carrier, coated on the surface of the workpiece, is heated and baked to remove the water-based carrier in the water wax, so that the friction reducer adheres to the surface of the workpiece, thereby playing the role of friction reduction and lubrication At present, most of the auto parts assembly factories adopt automatic production in production, and the bolts are automatically loaded before installation, which brings a problem. Some phosphating bolts are dipped in anti-rust oil on the surface, and some No, but they all go through the same automatic feeding line, so there will inevitably be anti-rust oil residue on the feeding line, and it takes a lot of manpower and material resources to clean the feeding material every time you switch between oiled and oil-free bolts The thread is not only time-consuming and laborious, but also undoubtedly increases the production cost of the enterprise. In addition to improving the anti-corrosion ability, the most important function of the anti-rust oil is to stabilize the friction coefficient (lubrication function) of the bolt, and the friction coefficient is the friction coefficient during the bolt tightening process. An important guarantee factor for tight force

[0003] At present, most of the bolt workpieces on the market are difficult to ensure the friction coefficient of the bolts without being immersed in oil, so it is difficult to ensure the stable quality of the bolt workpieces in the application process, and it is not convenient to guarantee the service life of the bolts