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As the core pressure-bearing component of pump systems, the casting quality of pump casings directly determines operational stability, service life, and safety performance. Across industrial applications—from centrifugal pumps for agricultural irrigation to corrosion-resistant pumps in chemical plants, and high-temperature/high-pressure pumps in power systems—these cast casings play an indispensable role. High-quality casings effectively withstand medium pressure and resist corrosion, ensuring smooth fluid flow. Conversely, substandard casings may develop leaks or cracks, potentially causing equipment failures or even safety incidents. Therefore, in-depth research into material selection, process optimization, quality control, and technological innovation for pump casings is crucial for enhancing the overall performance of pump systems.

To solidify the professional foundation of new employees and enhance the team's business capabilities, Dalian Jiachuang Metal Manufacturing Co., Ltd. recently organized a special training program on basic industry knowledge for new employees, demonstrating the company's high regard for talent development and long-term development strategy.

We often long for a perfect life, hoping that everything goes smoothly and is within our control. However, life is full of ups and downs and seldom goes exactly as we wish. There is no perfect life in this world; there is only a better mindset. In an imperfect life, the attitude we choose to face it truly influences the direction of our life. When you start to change your perspective on the world, the same life will reveal different landscapes. The following five mindsets might help you embrace the world better.

Abstract: This paper focuses on the locations, causes, and improvement measures of cracks that are prone to occur in the pump body of multi-stage pumps during sand casting. Starting from the structure of the multi-stage pump body and combining with the key processes of sand casting, a systematic analysis is conducted. The study indicates that the flange connection area of the multi-stage pump body, the root of the blades, and the areas with sudden changes in wall thickness are the high-risk points for cracks. The main reasons are structural stress concentration, improper casting process control, and the characteristics of stainless steel material. The main text deeply explores the influence mechanism of each process on casting defects (such as cracks), and proposes targeted optimization solutions, including improving the structural design, enhancing the strength of the sand mold, and controlling the pouring parameters. The full text emphasizes reducing the occurrence rate of cracks in the casting pump body through refined operation management and improving the reliability and production efficiency of the stainless steel multi-stage pump body.

Sulzer's Fluids & Services segment maintained continued growth in baseload, aftermarket, and small-project sectors. Due to economic uncertainties, customers adopted a cautious approach to some large-scale project decisions. This unfavorable investment environment had a slight impact on the Fluids segment but a significant impact on the Chemical Technology segment.

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.