In the electronics industry, when a small wafer is cut from a large wafer, it often produces large amounts of debris. Usually these materials will be discarded, but thanks to a research currently being carried out by Tohoku University and Osaka Univer…
Smoke detectors c…
(2) The beginning and size of the cold extruded blank. The blank is a 50 mm non-standard copper tube with a contact arm of 33 mm × 162 mm, as shown in Figure 3. On the basis of the extruded product, the diameter is 0.3-0.5mm, which is convenient for the blank to be placed in the cavity.…
〠Abstract 】 On the basis of a brief introduction of vacuum carburizing and carbonitriding, the effects and applications of acetylene vacuum carburizing and acetylene and ammonia vacuum carbonitriding are introduced.毫米至0. 08毫米。 …
Rotating handle: For easy and reliable rotation of the part, the upper part of the handle is knurled and threaded with the measuring rod (see Figure 5).
Proofreading gauge: In the mass production, the measuring instrument is used frequently and the wear and tear will be accelerated…
1 Preface
CNC lathe is a highly automated machine tool. The main drive system of CNC lathe is characterized by: 1 machine tool has high enough speed and large power to meet the needs of high-efficiency machining; 2 spindle speed change is fast and reliable, genera…
High temperatures, heavy rain, and change are the people's summer weather. The complex weather has made summer decoration more numerous than the spring season, and the choice of building materials has become more demanding. As a relatively important part of the decoration, the laying o…
Fourth, the choice of iron smelting and spheroidizing treatment process
Smelting equipment
The smelting of molten iron by a 5t power frequency furnace has the following effects:
(1) Facilitate the adjustment and control of chemical composition.
(1) The diameter of the elbow module D will be rebound after the external force is canceled, so the diameter of the elbow module should be less than twice the radius of curvature of the elbow. The value is calculated according to the following empirical formula.
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