Method for processing shell of industrial plug socket

Abstract

The invention provides a method for processing a shell of an industrial plug socket, which aims to solve the following problems that: the shell is manufactured by a die-casting process, and the marketcannot supply special-model anti-explosion electric connectors which have few demands but are necessary; the die-casting process generates air bubbles and sand holes so that the strength and the toughness of the shell are greatly reduced; and the shell produced by the die-casting process contains impurities, the surface almost cannot be subjected to oxidation treatment, the shell is easy to be eroded, and the explosion-proof performance is reduced. The key point is that the method adopts a machining process to process aluminum alloy pipes into shells. The method has the following advantages:standard sectional materials are selected, the raw materials are easy to get, the price is low, and the die cost is saved; the market supply is satisfied; the shell has no air bubbles and sand holes,and the strength and the toughness are greatly higher than that of shells produced by the die-casting process; and the aluminum alloy pipe materials contain no impurities, the surface is easy to perform the oxidation treatment, and the corrosion resistance is improved remarkably.

Description

technical field [0001] The invention relates to a processing method for the casing of an industrial plug and socket (current of 5 A and withstand voltage of 200 V or more), in particular to a processing method for the casing of the industrial explosion-proof plug and socket. Background technique [0002] Explosion-proof electrical connectors - plugs and sockets, are widely used in oil fields, coal mines, underwater and heavy chemical enterprises and other harsh environments, flammable and explosive occasions, requiring the shell of the plug and socket to have the characteristics of high strength, corrosion resistance, and good sealing. . At present, explosion-proof electrical connector shells (hereinafter referred to as shells) are all made of aluminum alloy die-casting technology. It not only requires die-casting equipment, but also die-casting molds, so it is suitable for processing the same product with the same size and the same structure. The larger the batch, the lowe...

AI Technical Summary

Problems solved by technology

The number of explosion-proof electrical connectors of the same type used in each of the above-mentioned places is not large, and the types of explosion-proof electrical connectors used in various places are also different in thousands of ways, and there are many models. The shell of each model requires several sets of molds. It is not cost-effective to produce explosion-proof electrical connector shells suitable for the above-mentioned places, especially the explosion-proof electrical connectors that are in small demand but must be used cannot be supplied by the market.

The field has always been eager to solve the supply problem of this shell; secondly, the shell made by the die-casting process will inevitably produce bubbles and trachoma, and its metallographic structure will be destroyed during die-casting, resulting in shells, especially shells. The strength and toughness of the thread are greatly reduced, and the explosion-proof electrical connector used in the oil field is due to the harsh environment, and oil sludge and sand enter the thread of the casing, which cannot be rotated normally. Workers on site often use a hammer to hit the casing according to the direction of rotation. The connector, especially the thread of the housing, is damaged and becomes a disposable product; finally, the material of the housing produced by aluminum alloy die-casting process is not high in purity, contains impurities, and the surface can hardly be oxidized. The corrosion effect is poor, which reduces its explosion-proof performance. Therefore, it cannot be used in strong corrosion places such as salt spray and offshore drilling platforms. Its shell can only be cast with stainless steel. In this way, the same product needs two sets of molds to realize. Greatly increased the cost of the product