The design of the gating system directly affects the quality of investment castings. The gating system is generally composed of a gate cup, a sprue, a transverse sprue, and an inner sprue. Due to the unique structure of the ball valve, changing the structure and size of the pouring...
For the convenience of analysis, this article only conducts defect analysis on a single investment casting. The pouring system structure of 304 stainless steel ball valve under traditional technology is a stepped pouring system, and the distribution of shrinkage porosity and shrinkage defects is shown in Figure 1. Through...
Switch to the cast module, set simulation parameters, edit materials on the user defined page, edit the composition of 304 stainless steel in the table, and select zircon sand as the shell material. The traditional process parameters set the pouring temperature to 1550 ℃ and the preheating temperature of...
With the improvement of the world’s technological level, people’s demand for energy is increasing day by day, and material conservation has become the goal of various countries’ efforts. Traditional casting in the casting industry consumes both manpower and financial resources, while investment casting can better achieve minimal and no...
The temperature node is taken between AC1 and AC3 of 2Crl3. Since the austenitizing of 2Crl3 begins at 820 ° C and is basically completed at 950 ° C, the temperature is taken at about 820 ° C and 950 ° C to analyze the change of structure and...
Among the many strengthening mechanisms, the method of grain refinement is the best way to control the strength and toughness of the material. Other methods do not improve the strength and toughness at the same time. We mainly improve the strength and toughness of martensitic stainless steel from the...
When studying 00cr13ni5co9mo5 maraging stainless steel, Luo Jing et al. Found that only a small amount of martensite was transformed into austenite phase when the aging temperature was set at 480 ° C. This aging obtained a small amount of distributed austenite while obtaining ultrafine lath martensite, which can...
2Crl3 stainless steel is a hypoeutectoid steel. The temperature is raised to the austenite transformation temperature and kept for a period of time to make its austenite nucleate more evenly. Then, it is cooled rapidly. This process is called foreign fire. The MS of Crl3 type stainless steel is...
Li Yupeng and others found that under the same quenching and tempering process, the tensile strength of 2Cr13 Steel after isothermal annealing can be more than 850mpa, and the impact energy aku2 value can also be increased by 21.8%, reaching 75.5j. Under the process of 1000 ° C +...
Generally speaking, as cast alloy steel is mostly ferritic + carbide phase, so is 2Crl3 stainless steel, which needs further annealing treatment. 2Crl3 stainless steel is a medium low carbon alloy steel. Relevant data show that under the traditional 750-800 ° C heat preservation for 2-6h and air cooling,...