Using high manganese steel as the material, the filling and solidification process of the bucket tooth casting was numerically simulated by the casting simulation software ProCAST. The simulation results show that the filling time of the pouring system is relatively long and the filling temperature is relatively high, which leads to the formation of large shrinkage porosity inside the bucket tooth casting. The pouring process parameters and the pouring system were optimized and the numerical simulation was carried out. The results show that after the process optimization, the surface quality of the bucket tooth casting is good, the internal solidification speed is accelerated, the process defects are reduced, and the scrap rate is lowered.

The effects of different solution treatment cooling processes (direct water quenching and furnace cooling followed by water quenching) on the microstructure and properties of the super-duplex stainless steel CD3MWN were investigated.

Let's take a detailed look at the material selection principles for forged gear blanks and the typical application scenarios of different materials. Forging, as one of the main forming methods for gear blanks, is crucial in material selection, which directly affects the final performance, lifespan, processing cost, and application feasibility of the gear.

Starting Point Selection: If there are no special high requirements for specific applications, medium carbon alloy steel (such as 40Cr, 42CrMo) as quenched and tempered steel is a safe, reliable, and cost-effective starting point.

Cast iron has excellent casting properties, shock absorption, wear resistance, and machinability. It is relatively low-cost and widely used in general-purpose reducer housings. Its graphite is distributed in flake form, which weakens the continuity of the matrix, resulting in relatively lower strength and toughness. However, it can meet the requirements of most medium and low-speed reducers with small loads.

Reducer gears play a crucial role in mechanical transmission and can be classified in various ways, each with its unique characteristics and application scenarios. Here is a detailed introduction to the different types of reducer gears and their features:

Taking 2Cr13 martensitic stainless steel as the research object, the effects of different nickel contents on the microstructure and comprehensive properties of 2Cr13 martensitic stainless steel were studied by means of metallographic microscopy, hardness testing and tensile testing at room temperature. The research results show that 2Cr13 martensitic stainless steel can obtain a fully martensitic structure after hot rolling in the single-phase austenite zone and air cooling. When w[Ni] is 0.1%, the martensite laths are relatively coarse. As w[Ni] increases to 0.3%, the hardness after heat treatment increases by 10HRC, and the yield strength, tensile strength and elongation after fracture increase from 614 MPa, 748 MPa and 30% to 670 MPa, 797 MPa and 33%, respectively. The mechanical properties of 2Cr13 martensitic stainless steel can be adjusted by increasing the tempering temperature and holding time to meet different order requirements.

35CrMo and 40Cr, as common alloy structural steels, although widely used in mechanical manufacturing and engineering applications, each exhibit their unique characteristics and advantages in terms of chemical composition, mechanical properties, and specific application scenarios.

During the manufacturing process of ductile iron, there are a series of trace elements that interfere with the spheroidization process. Although the mass fraction of these elements in ductile iron is only a few parts per ten thousand or a few parts per hundred thousand, they can significantly affect the spheroidization effect. This interference is closely related to the magnesium content in the melt and the cooling rate, and the effects of various interfering elements are superimposed.

In the extreme working conditions of chemical engineering, nuclear power and other fields, Incoloy 800HT has become a star material in the pressure vessel industry due to its "high-temperature resistance, corrosion resistance and high strength" trinity performance. Today, we will deeply analyze the "genetic code" and practical capabilities of this alloy!

Recrystallization refers to the crystallization process of solid metals and alloys without phase transformation. It is the process of softening metals or alloys that have undergone work hardening without phase transformation.

During the solution treatment of 17-4PH martensitic stainless steel, elements such as copper and niobium dissolve into the austenite grains. After cooling, supersaturated copper and niobium martensite is obtained, achieving the first strengthening. Then, during the aging process, the supersaturated copper and niobium elements in the grains precipitate, which provides the second strengthening for the matrix. This is the main strengthening method for 17-4PH steel.