China's foundry industry has always been an important, fundamental, and irreplaceable sector of the national economy, boasting advantages such as relatively low costs and wide process adaptability. my country is a major foundry nation, ranking first in the world in terms of annual casting output, number of employees, and enterprises. With the increasing trend of economic globalization and the continuous development of the market economy, the demand for and reliance on various standards in casting-related processes, production, and management are growing. In my country, many problems remain to be solved in achieving large-scale production of aluminum alloy castings and meeting the requirements of automotive lightweighting: First, automotive requirements for aluminum castings are trending towards thinner walls, more complex shapes, higher strength, and higher quality. To adapt to these requirements, casting processes should be further optimized, and new alloy materials should be developed. Second, production costs should be reduced from a design and process perspective, such as using multi-part mold technology and automation to improve productivity, extend mold life, and adopt…

  316 and 304 stainless steel castings are widely used in applications requiring corrosion resistance. They are used in all fields, from construction and medical to food processing equipment. Stainless steel castings are ideal for use in environments with high hygiene requirements. Firstly, they do not react with corrosive acids. Secondly, surgical instruments and tableware made of stainless steel are easy to clean and sterilize. Another reason for using stainless steel is that it does not require powder coating to resist corrosion and can maintain its aesthetic appeal. Of course, although they are called stainless steel castings, wear and corrosion are only a matter of time, but they remain excellent solutions for harsh environments and can provide durable products in many fields. 316 stainless steel castings: Due to the addition of molybdenum to 316 stainless steel, its corrosion resistance…

Stainless steel casting is a casting process with little or no cutting. It's an excellent technology in the casting industry with a wide range of applications, suitable for casting various types and alloys. Simply put, the stainless steel casting process uses fusible materials to create a fusible model, which is then coated with several layers of a special refractory coating. After melting and drying to form a single shell, the model is melted away from the shell using hot water or steam. Stainless steel casting achieves high dimensional accuracy. The complex investment casting process means that many factors directly affect the dimensional accuracy of the casting, including linear changes in the shell during heating and cooling, the alloy's shrinkage rate, and deformation during solidification. Stainless steel casting is used when other processes like pipe bending are not feasible for producing irregularly shaped stainless steel products. It involves a wax pattern → sand mold → liquid material filling and molding process…

Stainless steel is a familiar material to many, and it offers numerous advantages compared to other materials. In fact, stainless steel castings have very high requirements in both design and mold making. Although some products may seem easy to cast, they still have strict requirements regarding processability. So, what are the process requirements for stainless steel castings? Here's an introduction: 1. The parting surface must be flat. The parting surface of stainless steel castings must be flat to minimize burrs and flash. Some factories cut corners on materials to reduce workload, but this will inevitably result in substandard product quality. The castings we choose must have minimal tolerances and good strength. Even for small batches, simple parting molding should be used. 2. Improved boss and rib structure. Many stainless steel castings often…

With years of experience in various projects, Haijin Precision Casting understands and complies with international material specifications, including but not limited to ASTM, AISI, ANSI, AS, BS, DIN, EN, JIS, KS, ISO, etc.   

 Currently, several commonly used precision casting methods in factories can meet actual production needs. However, the performance indicators of the mold material are directly related to the quality of the precision castings, directly affecting their dimensional accuracy and quality. Therefore, higher requirements must be placed on the dimensional and quality control of mold material castings. The performance requirements for mold materials are as follows: 1. A small linear shrinkage rate and a minimum coefficient of expansion within the softening temperature range are necessary to achieve the required dimensional accuracy. 2. Low heat capacity and a moderate melting point are required to facilitate the creation of the mold shell using wax and the removal of the wax from the shell. 3. The mold material should have sufficient hardness and strength at room temperature and high thermal stability at slightly above room temperature to prevent various cracks, breaks, or surface scratches in actual production and daily life. 4. Low viscosity in the molten state is required to provide good flowability and molding performance, which is beneficial for thin-walled and complex-shaped castings…

Precision machining is an essential process for manufacturing large and small parts according to strict manufacturing specifications and critical tolerances. Of course, not every job requires this level of precision, but it is crucial when parts need to meet highly specific design specifications. Precision castings are ubiquitous, from medical and aerospace to automotive and home entertainment. Understanding precision machining: The basic form of precision machining is taking a larger piece of material and cutting away the excess to produce a smaller piece. A material removal process replaces the larger piece of material in a certain way. This smaller piece of material will be precisely where it is needed to successfully complete its task. Typically, it involves cutting the material to precise shapes and dimensions, thus requiring the use of multiple machines. &…

The Necessity of Quality Inspection for Large and Medium-Sized Stainless Steel Castings: In recent years, the rapid development of the casting industry has led to the problem of inconsistent product quality. However, if we manufacture a product and immediately sell it without considering its quality, the product quality is insufficient, and customers will feel uneasy using it. This principle also applies to large and medium-sized stainless steel castings. It's not necessary to investigate the reasons for the substandard large and medium-sized stainless steel castings or complete the process during manufacturing; the goal is to continuously improve product quality to enhance overall usability. Naturally, this involves continuously improving the advantages of the product's specific characteristics based on its application capabilities, aiming at all aspects of the product's application effects, so that the quality of large and medium-sized stainless steel castings, such as at the top level, has excellent quality control, reflecting the advantages of the product's overall characteristics, and making it competitive. So how exactly do we…

This standard is based on the casting surface roughness comparison sample block specified in (GB/T 15056-2017) to inspect the casting surface roughness plating, and serves as a reference for casting process and selection of casting surface roughness.