News

Recently, Dalian Jiachuang Metal Manufacturing Co., Ltd. (hereinafter referred to as "Jiachuang Metal") has achieved a major technological breakthrough in the field of sand casting. Its independently developed patent technology has successfully solved the manufacturing challenges of OH pump steel casting impellers. According to third-party testing, the comprehensive qualification rate of impellers has increased from the industry average of 85% to 99%, and the production cycle has been shortened by 40%. This achievement not only fills the technical gap in high-end pump castings in Northeast China but also marks the innovative strength of local small and medium-sized enterprises in industrial upgrading.

On October 26th, the 17th Asian Foundry Conference and the 2025 China Foundry Week, themed "Green Foundry, Innovative Asia," opened at the Xi'an International Convention and Exhibition Center. On the first day of the conference, six technical forums were launched, the international foundry exhibition gained increasing popularity, and the atmosphere for professional exchange and business negotiations became increasingly vibrant.

As a core flow component in fluid machinery, guide vanes are extensively used in critical equipment such as water turbines, pumps, and compressors. Their performance directly impacts the efficiency, stability, and service life of the entire system. These components must withstand complex hydrodynamic loads, material corrosion, and temperature fluctuations, requiring stringent specifications for material properties, structural precision, and surface quality. Casting serves as the primary manufacturing method for guide vanes, involving multiple critical processes including material selection, mold design, melting and casting, heat treatment, and quality inspection. The quality of the casting process directly determines the final product's performance. This article will delve into the technical aspects, process optimization, and quality control of cast guide vanes.

Our company organizes study sessions on the classic works of Kazuo Inamori to cultivate a leadership team that drives high-quality corporate development.

Dalian Jiachuang Metal Manufacturing Co., Ltd., a leading domestic supplier of pump components, recently successfully passed the rigorous certification process of TÜV Rheinland. This marks a significant breakthrough in the company's quality management and international market access, laying a solid foundation for its products to enter the global high-end market.

With the release of their 2025 semiannual reports, statistics compiled from 12 internationally renowned pump companies show that their total sales in the first half of 2025 reached approximately RMB 150.8 billion, a 19.2% year-on-year increase compared to RMB 126.46 billion in the same period last year. Of these 12 companies, only one achieved strong double-digit growth, while ten saw year-on-year increases.

Abstract: This paper systematically analyzes the causes, common processes and locations of sand hole defects in the sand casting process of BB3 type multistage pump bodies in cast steel parts, and proposes targeted solutions. Through literature review and case analysis, it was found that the defects of sand holes mainly result from insufficient strength of the molding sand, design flaws of the gating system and improper operation, and are prone to occur in the molding, core setting, closing and pouring processes. The specific locations include gates, risers, thick parts of castings and inner cavities. By optimizing the proportion of molding sand, improving the design of the gating system and strengthening process control, the occurrence rate of sand holes can be effectively reduced and the quality of castings can be improved.

At present, the company is mainly to pump valve, blower, compressor, steam turbine, propeller and other fluid mechanical parts casting, Covering oil, petrochemical, shipbuilding, coal chemical industry, water treatment, gas control, automobile manufacturing, cement, spraying, printing, LNG, power and other fields of main engine device components, Including GB, ASME / ASTM, EN, ISO, JIS, Including ordinary carbon steel, austenitic stainless steel, ferrite stainless steel, martenitic stainless steel, precipitation hardened stainless steel, double-phase stainless steel, Lewmet, Inconel, Incoloy, Hastelloy, and Monel and other nickel-based alloys, Cr26, Ni-hard and other anti-wear white mouth cast iron, involving corrosion-resistant, wear-resistant, high-temperature resistance and other high-end materials.

With the release of their 2025 semiannual reports, statistics compiled from 12 internationally renowned pump companies show that their total sales in the first half of 2025 reached approximately RMB 150.8 billion, a 19.2% year-on-year increase compared to RMB 126.46 billion in the same period last year. Of these 12 companies, only one achieved strong double-digit growth, while ten saw year-on-year increases.

Recently, Dalian Jiachuang Metal Manufacturing Co., Ltd. (hereinafter "Jiachuang Metal") has made a critical breakthrough in sand casting of steel casting impellers—the core of OH pumps—via independently developed patents.