Cast iron EPC-V method process factors on the speed of filling
. Hair test gas is sealed at 1000 ℃ for the tube furnace,mulberry oslo, and the actual filling conditions are different, but taking into account the filling time is very short, look like the instant heat, so the appearance of the first few seconds of pyrolysis of may be more in line with the actual can be seen from the figure, in the 15s or less, copolymers made gas the fastest, most hair volume, and low-density gas slowest EPS hair,abercrombie dublin, hair volume minimum. Thus confirmed the copolymer filling the slowest, the fastest low-density EPS filling the basic reason. Therefore,mulberry, in order to obtain rapid filling velocity for different wall thickness of the shape of the cast iron should be used as much as possible the appearance of low-density EPS material. 2.2.2 Paint three kinds of paints level of permeability,abercrombie brussel, respectively 8.6,17.8,10.5 was determined, and its impact on the speed of filling is shown in Figure 4. Obviously, the better the coating permeability, its filling faster because the coating permeability, and is conducive to the exclusion of gaseous decomposition products and reduce the appearance of liquid metal front and asked the air gap pressure, thus increasing the filling speed . Analysis of variance results showed that coating on the filling rate has a greater influence, but looks like the interaction of materials and coating speed of filling the role of permeability than the coating is also great so look for the best match between the two, to get the midship _u_u, the World button ∽ High-density low-chou degree EPSEE EPS3 paint to move gas down map-type velocity of the seven best filling speed is critical. 2.2.3 Metal hydrostatic head hydrostatic head on the metal filling velocity Figure 5. It can be seen from the figure, the presence of negative pressure, filling rate increases with increased hydrostatic head of Figure 5 speed hydrostatic head of the seven types of analysis of variance results that, in the presence of negative pressure, the metal bandit head impact than static coating large; in non-vacuum conditions, WangC. so that the static head of metal filling velocity than the small paint This is because the negative pressure introduction, leading to the impact of reduced pyrolysis appearance,ugg outlet, and the enhanced role of the hydrostatic head results. 2.2.4 pouring temperature effects can be seen from Figure 6, with the pouring temperature increasing, the filling will speed up this a little closer with the air type casting, but the temperature will increase costs, reduce productivity ... Figure 6 pouring temperature on the degree of the trial against the ring-type back,mulberry outlet, therefore, to improve the filling speed demanding increased pouring temperature may outweigh the benefits, should be mainly from the foam,ralph lauren outlet, paint and metal static pressure to be first-class efforts in general,mulberry tasker, the gasification temperature mold casting casting casting compared to empty 30 ~ 80 ℃ high enough. 2.2.5 The introduction of vacuum suction can be significantly improve the gasification casting filling velocity, similar to the case of casting blank] in our experimental conditions, little change in the scope of the initial vacuum (o.02 ~ 0.04MPa), pouring sand box instantly seals damage, vacuum down quickly, so do not see the size of the initial vacuum filling velocity changes on 3 Conclusions (1) In this study the process conditions, orthogonal analysis of variance that affect the speed of filling large to small as follows: appearance of materials, metal static head,abercrombie düsseldorf, breathable coating, pouring temperature and coating materials, the interaction of the appearance of liquid metal filling velocity has a very important role. (2) Choose low-density EPS material improve the static head and the metal pouring temperature, select the appropriate coating, are conducive to improving cast iron filling velocity (3) to maintain a certain degree of vacuum will help gasification castings filling velocity increased, but the initial vacuum 0.02 ~ o.04MPa degree range, filling the vacuum speed of little effect. References 1WangC, RamsayCW, AskelandDR.EttectofProcessingParametersOnMoMFillingforGrayIronEPCC ~ stlagUsingStatisicalExperimentalTechniques.AFSTransaction, I994,mulberry outlet, 102} 92l ~ 9302 gold Liangchao. orthogonal design and multi-index analysis, Beijing; China Railway Publishing House, 1988.3WallingRP + DanzigJA.MechanismsofMoldFillingintheEPCProcess.AFSTransaction, 1994,102 I849 ~ 854 (Editor: Chen Wei-Chen) 7
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