Hexagonal flange nut processing technology process

Hexagonal flange nut processing technology process

 (1) Preparation of raw materials

Prepare the hexagonal material, pull it to the appropriate length, check its size using the sawing machine, and clamp it on the lathe to start the turning process.

Fiberglass Flanged Hex Head Screws: Made from polyurethane reinforced with glass fiber, these screws are chemical and oil resistant, nonconductive, and lightweight. The flange distributes pressure where the screw meets the surface, eliminating the need for a separate washer. Head height includes the flange. Length is measured from under the flange.

Medium-Strength Metric Class 8.8 Steel Serrated-Flange Hex Head Screws: These Class 8.8 screws are suitable for fastening most machinery and equipment. Serrations under the head grip the material surface for mild vibration resistance, and the flange distributes pressure where the screw meets the surface, eliminating the need for a separate washer. The zinc plating provides corrosion resistance in wet environments. Dimensions meet DIN 6921 specifications. Head height includes the flange. Length is measured from under the flange.

Extra-Wide Serrated-Flange Hex Head Screws: These screws have a flange that's at least 10% larger than a standard flange for more gripping power. The flange distributes pressure where the screw meets the surface, eliminating the need for a separate washer. Serrations under the head grip the material surface for mild vibration resistance. Made from Grade 5 steel, these screws are suitable for fastening most machinery and equipment. The zinc plating provides corrosion resistance in wet environments. The material meets SAE J429 specifications for quality. Dimensions meet IFI 111 specifications. Head height includes the flange. Length is measured from under the flange.

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(2) Turning

The sawed length of the hexagonal material is clamped on the lathe and fixed; pay attention to the lathe's spindle and the center axis of the workpiece to maintain concentricity and accurately adjust the height of the tool. Turning before the need to hit the bottom of the knife, that is, the workpiece to turn 180 °, so that one side of the material, the alignment of the same, determines the position of the car tool before turning to process.Replace the turning tool at the right time and process the hexagonal shape as shown in the figure.

(3) Milling

Turning-shaped hexagonal material clamped to the milling machine will be processed into the surface of the mathematical hexagon through the milling cutter to ensure consistency in the size of the hexagonal edges and the hexagonal angle of accuracy. Note that the milling machine cutting speed should be appropriate, and the cutting depth should not be too deep to prevent the processing of the hexagonal surface roughness.

(4) Tapping processing

After milling, the hexagonal flange face nut is tapped, and the internal thread is processed through mechanical tapping to improve its precision and quality. Pay attention to the timely removal of chips and swarf to reduce the tapping machine's loss. After tapping, the hexagonal flange face nut is tested for thread density.

(5) Heat treatment

Heat treatment is carried out on the machined hexagonal flange face nut to induce the material's organization transformation and improve its mechanical and physical properties. The material obtains better performance by controlling the heating temperature, holding time, cooling mode, and other parameters.

(6) Surface treatment

Hexagonal flange face nuts requiring a high degree of surface smoothness must undergo surface treatment. They will be polished to improve the surface smoothness, reduce surface friction and wear, and improve the service life.

(7) Summary

Although the hexagonal flange face nut processing process is relatively complex, as long as the process flows and reasonable control of process parameters, you can produce qualified products. In machining, one also needs to pay attention to selecting materials and handling problems in all aspects to ensure product quality and performance.