(1) When drilling according to the line, the punch must be drilled at the drilling point; when the drilling position is not flat, it should be adjusted to a flat surface and then processed; when drilling blind holes, a drill ruler or drill sleeve should be used The locating ring on the barrel controls the hole depth. Chips should be removed frequently; when drilling ≤6mm, the feed force should be light, the chips should be discharged frequently, and some cutting fluid should be added at the same time; when drilling thin-walled parts, buffer support should be used ; When drilling, the coolant should be sufficient. In the case of not affecting the machining shape, try to use a large diameter milling cutter; when milling a closed inner shape, drill a machining hole first, and the hole diameter should be slightly larger than the diameter of the milling cutter; when copying milling, first determine according to the imitation milling cutter guide rod Template size, make the template, adjust the positioning rod, and determine the processing position; when milling, the height of the positioning top block and the saw blade must be adjusted. Industrial aluminum
processing technology Aluminum profile processing method: The production of aluminum alloy profile includes three processes: casting, extrusion and oxidation. 1. Casting is the first step in aluminum production. Main process: (1) Ingredients: According to the specific alloy grade produced, calculate the addition amount of various alloy components, and reasonably match various raw materials. (2) Smelting: The prepared raw materials are added to the smelting furnace according to the process requirements, and the slag and gas in the smelting furnace are effectively removed through degassing and slagging refining. (3) Casting: Under certain casting conditions, the aluminum liquid is cooled into round casting rods of various specifications through a deep well casting system. Industrial aluminum 2. Extrusion: Extrusion is a means of profile forming. First, design and manufacture a mold according to the cross-section of the profile product, and then use an extruder to extrude a heated round casting rod from the mold. Commonly used grade 6063 alloy is also strengthened by air-cooling quenching process and subsequent extrusion artificial aging process. Different grades of heat treatment strengthened alloys have different heat treatment systems. Oxidation: The surface corrosion resistance of extruded aluminum alloy profiles is not strong, so anodizing method should be used for surface treatment to improve the corrosion resistance, wear resistance and appearance of aluminum. The main process is: The main results are as follows: (1) Surface pretreatment: The surface is cleaned by chemical or physical methods to expose the pure matrix on the surface to obtain a complete and dense artificial oxide film. Mirror or non-luminous (matt) surfaces can also be obtained by mechanical means. (2) Anodization: Under certain process conditions, anodize the surface of the substrate to form a dense, porous, and strongly adsorbed Al203 film. (3) Sealing: The pores of the porous oxide film formed after anodic oxidation are closed, thereby improving the pollution resistance, corrosion resistance and wear resistance of the oxide film. The oxide film is colorless and transparent. Using the strong adsorption of the oxide film before sealing, the metal salt is adsorbed and deposited in the pores of the film, so that the surface shows a variety of colors other than black, bronze, gold, stainless steel and other non-true colors (silver white).
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