The strength of resin sand is often classified into room temperature strength and high-temperature strength. Room temperature strength is further divided into initial strength and final strength. Initial strength refers to the strength of the molding sand immediately after mixing, while final strength refers to the strength of the molding sand after 24 hours.

Carbon Atomic number: 6 Density (20°C): 2.3 g/cm³ Atomic weight: 12.01 Melting point: > 3550°C (6422°F) Boiling point: 4827°C (8721°F)

To determine whether ductile iron is prone to porosity, the following aspects can be considered:

Baozhu sand is a green and environmentally friendly casting sand, also known as electrically fused ceramsite, ceramsite sand, or jewelry sand. Its scientific name is "fused ceramic sand". Raw Materials and Manufacturing Process Baozhu sand is made from high-quality bauxite as the raw material and processed through calcination, electric melting, granulation, and screening to produce spherical refractory material particles.

Hot chamber die casting is a time-honored die casting technique characterized by the direct immersion of the injection mechanism into the molten metal. This process is suitable for low-melting-point metals such as zinc, tin, and lead alloys.

The type, properties, and moisture content of the resin can have an impact. For instance, furan resin with a relatively high moisture content will inhibit the condensation reaction, slow down the hardening speed, and extend the working life and molding time. If the pH value of the resin is too high, it will consume more curing agent, also causing the hardening process to slow down.

Mold design is a crucial step in the die-casting process, directly influencing the quality of the castings and production efficiency. It requires comprehensive consideration of the casting's shape, size, functional requirements, as well as the fluidity and solidification characteristics of the alloy. Mold material selection: Commonly used mold materials include steel and aluminum alloys, among which H13 steel is widely employed due to its excellent thermal stability and wear resistance. The choice of mold material should be based on the production volume of the castings, the type of alloy, and cost-benefit analysis.

The functions and characteristics of the inner cavity coating of molds and various coatings are as follows:

Cracks in castings are common problems in the casting manufacturing process. The causes are complex and diverse, mainly including internal defects in the casting, temperature stress, pressure stress, unreasonable casting design, and improper cooling measures.

42CrMo4 + QT steel, material No. 1.7225 (Standard EN 10083/3 // ISO 683/1 3) is a European standard alloy steel, usually delivered in tempered and quenched states. It possesses high strength, high toughness, excellent quenching performance, temper brittleness, high fatigue limit, good impact resistance after quenching and tempering, as well as low-temperature impact toughness. This steel is suitable for manufacturing medium and large-sized plastic molds, transmission gears, rear axles, bearing connecting rods, spring lock washers and deep oil well drill pipe joints that require certain strength and toughness.

We know that the three key elements of gear tooth profile modification design are: modification amount, modification curve and modification height. Then, how are the three variables determined during tooth profile modification design? And what design considerations are there during tooth profile modification design?

Titanium plating on molds is a new type of surface treatment technology for molds that integrates materials science, physics, electronics, chemistry, and social environmental science. This technology is applied in metal processing, manufacturing processing, and product performance, aiming to promote the rapid development of modern cutting and manufacturing industries.