Bakelite Injection Molding Machine Bakelite, also known as bakelite, also known as phenolic molding, is a thermosetting plastic with high impact toughness, stable quality, corrosion resistance, heat resistance and low temperature. Generally speaking, the process of Dewei forging bakelite Injection Molding Machine brand is divided into the following processes. You can have a look together to better understand the knowledge of bakelite injection molding. Bakelite Injection Molding Machine,Bakelite Injection Molding Machine ,Bakelite Injection Moulding,Automatic Bakelite Moulding Machine Ningbo Chenwei Machinery Technology Co.,Ltd , https://www.chenweimachinery.com
1. Bakelite mold heating
Unlike Plastic Mold, bakelite mold can be produced after being put on the machine. It takes a long time to heat up bakelite mold.
2. Temperature rise of bakelite injection molding material
The customized material of bakelite injection molding machine is generally powder. Under the friction formed by the barrel heating device and the screw, the thermosetting plastic in the barrel is melted by heat to achieve the effect of pre-setting plastic material.
3. Injection molding of bakelite products
After the completion of pre-molding, the mold closes, the screw rod starts to inject, and the molten material is pushed by the screw from the barrel nozzle through the main channel, the diversion channel and the gate of the mold into the mold core, and the mold core is fully filled. Because the melted material is cut and heated during injection molding and the mold is at high temperature, the temperature of the melted material rises rapidly into a fast response situation. The injection time of bakelite products is different from that of plastic products, and the injection time of bakelite products is relatively long.
4. Dry and solid under pressure
After injection, it will enter the pressure maintaining state immediately. The effect of pressure maintaining has two aspects: one is shrinkage, and the other is to ensure that the product structure produced by the bakelite injection molding machine manufacturer can be close and firm. After the completion of pressure maintaining, it will be delayed for a period of time, waiting for the material to be completely dry and solid, and then the product will be finalized.
5. Ejection of bakelite products
Open the mold to eject the finished product, clean the mold, and wait for the next the first mock examination product to go out.
MAN test 175D V12 engine
Mann (ship hangar location) diesel engine (purchasing supply) and Turbo's 175D V12 engine (purchasing supply) are currently undergoing various deployment tests and will soon be used in marine experimental projects.
     It is reported that commercial shipping is the main application area of ​​the 175D engine. Launched during the Hamburg Show in Germany in 2014, the aircraft was optimized for use in ferryboats, offshore supply vessels (ship-type shipyards), tugboats (ship-type shipyards) and workboats (ship-type shipyards) for propulsion systems (purchasing supplies) . At the same time, the machine can also be used for marine generators (purchasing supply of products).
     Currently, several engines and generator sets are operating on eight test machine tools (purchased on the product library), both in IMO Tier 2 and Tier 3 modes, with continuous durability testing exceeding 1,000 hours, and special extreme environmental tests passing through Load and overspeed running tests.
     Lex Nijsen, head of the four-stroke ship business at Mann, said, "These tests have been very successful. We are currently producing a number of engines for multiple projects and we are expected to serve a sea in Europe in the coming months. The ship delivered the first of the four machines in the series."
     It is reported that the four MAN175 engines will be used for diesel-electric propulsion. The power of a single engine is 1920 kW and 1800 r/m. The annual operation time is expected to reach 4000-5000 hours, which meets the requirements of IMO Tier 3 regulations.
     Another project is the mechanical propulsion of two MAN 175 engines for a two-body passenger ship (ship-type shipyard), each with an engine power of 2,220 kW, which will drive a fixed-pitch propeller (purchased from the product library). The catamaran will operate in Asia and will operate for 4,000 hours a year and is expected to be delivered in 2017.
     The MAN 175D engine is equipped with a common rail fuel injection system that uses an efficient MAN turbocharger (purchased from the product library) and an engine configuration control system (purchased from the product library) to meet IMO Tier 2 pollution emission requirements. The IMO Tier 3 version is compact and comes with a modular selective catalytic reduction system developed by Mann.