How is the mold produced? It may not be clear to most people except the mold industry.
Die standard: mold frame (GB/T2851-2861); steel plate mold frame (JB/T7181-7188); parts and technical conditions (JB/T7642-7652); round punch and round die (JB/T5825-5830)
Plastic Injection Mould Standards: Parts (GB4169-4170); Medium and Small Die Sets and Technical Conditions (GB/T12556.1-2); Large Formworks and Technical Conditions (GB/T12555.1-15)
Die Casting Die Standard: Die Casting Die Parts and Technical Conditions (GB4678-4679)
Forging Die Standard: Universal Forging Module Size Series and Measurement Method (JB/T5900); Diamond Drawing Die (JB3944-85)
Die acceptance technical conditions (GB/T14662-93); Die steel and its heat treatment technical conditions (JB/T6058-92); Die frame technical conditions (JB/T8050-95); Die mold precision inspection (JB/T8071 -95).
Plastic injection mold acceptance technical conditions (GB/T12554-90); plastic mold technical conditions (GB/T14663-93); plastic mold size tolerances (GB/T14664-93); plastic mold part of the steel and its heat treatment conditions (JB/T6057-92); Plastic molding mold profile type and roughness (JB/T7781-95)
Die casting mold acceptance technical conditions (GB8844-88)
General specifications for roller forging dies (ZB/TJ46003-90); Technical specifications of fasteners for cold boring dies (JB/T4213-96); Steels for cold forging dies and heat treatment conditions (JB/T7715-95); Hot forging Die steel and its heat treatment technical conditions (JB/T5823-91); Polycrystalline diamond wire drawing die technical conditions (JB/T5823-91); Carbide wire drawing die technical conditions (JB/T3943-85).
Rotary evaporator rotovap machine is for evaporation and crystallization under vacuum pressure
Chemistry rotary evaporator concentrator or evaporator crystallizer with different material such as high borosilicate glass rotary evaporator and stainless steel evaporators and always used for lab chemical chemistry use or beverages, sample pharmaceutical engineering
Laboratory instruments rotary evaporators are mainly used for continuous distillation of large quantities of volatile solvents under reduced pressure. In particular, the reaction products can be separated and purified by the concentration of extraction solution and the distillation of the receiving solution during chromatographic separation. The basic principle of a rotaryvaporizer is reduced pressure distillation, that is,under reduced pressure, when the solvent is distilled, the distillation flask is continuously rotating
Structure: The distillation flask is a pear-shaped or round-bottom flask with a standard grinding interface, connected to a pressure relief pump by a high reflux serpentine condensing tube, and another opening of the reflux condensing tube is connected to a receiving flask with a grinding mouth for receiving the evaporated organic solvent. There is a three-way piston between the condensing tube and the decompression pump. When the system is communicated with the atmosphere, the distillation flask and the liquid flask can be removed and the solvent can be transferred. When the system is communicated with the decompression pump, the system should be in the state of decompression. When using, it should be DECOMpressed first, and then start the motor to rotate the distillation flask. At the end, it should be shut down first, and then air through to prevent the distillation flask from falling off in the rotation. As a heat source for distillation, it is often equipped with a corresponding constant temperature water tank.
Glass reactor mainly uses its double layer of glass characteristics, we can place the reaction material in the middle of the sandwich, through the atmospheric pressure or negative pressure under the condition of stirring reaction. In this way, the medium inside the interlayer of the glass reactor (such as freezing liquid, heating water or heating oil) can be heated or cooled by stirring in a circular reaction. It is widely used as an ideal equipment in modern biochemical new material synthesis experiments
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