The most common casting method for machine tool castings is sand casting. Advantage 1. The resin sand mold has good rigidity. In the initial stage of casting, the sand mold can be used for the graphitization shrinkage of the cast iron coagulation process, effectively eliminating shrinkage holes and shrinkage porosity defects, and completing the casting of gray cast iron and ductile iron with less risers and no risers. 2. In the production of solid mold casting, polystyrene foam is used for...
If you want to obtain large-scale castings of better quality, you must take the best method in the actual casting process, especially on the basis of grasping the large-scale castings In terms of material selection and casting skills, so as to ensure the quality of large castings. Due to various reasons, large cast iron parts encountered unexpected situations during use, which made them scrapped. If you want to replace a new one, the finished cast iron parts are processed by various machines,...
1. Large-scale workshop steel structure. Under normal circumstances, workshops with large cranes or heavy operations will use this steel structure, such as open hearth, converter workshop, iron mixing furnace workshop, blooming workshop in metallurgical workshops; steel casting workshops in heavy machinery workshops, hydraulic presses workshop etc. 2. Large span structure. The large-span steel structure refers to the vertical load-bearing structural columns and walls, and the roof adopts steel...
There are certain requirements for each steel structure grid used in grid engineering. Usually, steel structure grids have special or higher requirements in the following aspects. Haiyao Xiaobian tells you: Bonding parts: material, surface roughness, error, surface treatment, straightness (or radian); Joints: hole position deviation, bolt grade; welding method, welding specification, welding material; air tightness, non-destructive testing, liquid penetration test, etc. are required; Overall...
Steel structure engineering mainly includes grid structure, suspension cable structure and reticulated shell structure, etc., which are used for roof structures such as gymnasiums, waiting halls, hangars, workshops, etc. Advantages of steel structure: 1. Light weight, high strength, steel structure building is about 1/2 of the weight of reinforced concrete house, which meets the needs of large residential space. 2. Safe, reliable, and has the effect of wind resistance and earthquake resistance....
Steel structure workshop has short construction period: The construction part of the steel structure workshop is mainly prefabricated in the factory, and the installation is stopped after being transported to the construction site, which is convenient for assembly and construction. High refractoriness: When the surface temperature of the steel is within 150℃, the strength does not change much, and when it exceeds 150℃, the strength decreases significantly. Generally speaking, fire retardant...
(1) Weld connection The welding seam connection is the partial melting of the welding rod and the weldment by the heat generated by the arc, and the welding is condensed into a weld by cooling, thereby connecting the weldment into a whole. (2) Bolt connection Bolt connection is to connect the connecting parts into a whole through the fasteners such as bolts. There are two types of bolt connection: ordinary bolt connection and high-strength bolt connection. (3)Rivet connection The rivet...
1) Construction set-out a. According to the design requirements and drawing requirements, and in accordance with the actual situation, the elevation and axis should be verified for accuracy. b. Before construction, the theodolite should be used to match the axis, and the level should be used to determine the elevation. Also, make some records accordingly. c. After determining the axis and elevation, put the large sample, and then put the small sample, the order cannot be reversed. d. When...
1) Construction set-out a. According to the design requirements and drawing requirements, and in accordance with the actual situation, the elevation and axis should be verified for accuracy. b. Before construction, the theodolite should be used to match the axis, and the level should be used to determine the elevation. Also, make some records accordingly. c. After determining the axis and elevation, put the large sample, and then put the small sample, the order cannot be reversed. d. When...
Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.
Fill in more information so that we can get in touch with you faster
Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.
