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About
We are proud to have supplied a wide range of high quality aluminum die castings for over 20 years to customers around the world across multiple industries.
Ningbo Heshin Mould Co., LTD
Ningbo Hexin Mould Co., LTD., founded in November 2010, is located in Ningbo Beilun, the hometown of mould in China. It is a professional company engaged in the research and development, application, production and sales of aluminum alloy casting mould. (Aluminum alloy casting company based on auto parts) At present, the company is committed to the expansion and development of low-pressure casting new energy field.
The main business areas of the company are as follows:
1, low voltage mold manufacturing; 2, low voltage product production;
3. Gravity mold manufacturing; 4. Gravity product production;
5, High pressure mold manufacturing; 6, High pressure product production;
7, mold structure analysis; 8, product molding analysis
Diversified development, focusing on the manufacture of aluminum alloy products, has been the company is committed to aluminum alloy and its related industries casting production.
HEXIN PRODUCT SHOW
In the development and production of aluminum casting (pressure casting, gravity casting, low pressure casting) projects, Hershey is recognized as a safe and reliable partner by our customers worldwide. We take pride in the satisfaction of our customers.
Chrome-free surface passivation for aluminum alloys
Applications of Aluminum Aluminum is the most productive and widely used metallic material among non-ferrous metals. It is second only to steel in terms of production of structural metallic materials. All-aluminum engines The advantage of cast aluminum blocks in die-casting production is their light weight, which enables fuel savings through weight reduction. In an engine of the same displacement, the use of an aluminum block engine reduces weight by about 20 kilograms. For every 10% reduction in the car's own weight, fuel consumption can be reduced by 6% to 8%. Disadvantages of chromate surface treatment The waste tank liquid of chromate treatment method contains a large amount of hexavalent chromium ions, and according to GB 8978--1996 Comprehensive Sewage Discharge Standard, the concentration of hexavalent chromium in the waste tank liquid is not more than 0.5mg/L. However, hexavalent chromium ions have carcinogenic effect on human body. Long-term exposure to hexavalent chromium compounds can lead to...
03-19
2025
Casting vs. machining: how do we choose?
As a core member of Ningbo Hersin's casting technology team, I have been working in the field of high pressure casting, low pressure casting, gravity casting and aluminum materials for more than 20 years, and have led the process development of hundreds of industrial projects. Whenever a customer raises the question of "how to choose between casting and machining", my answer is always: "There is no absolute advantage or disadvantage, only the most suitable combination of technologies for the scene." The following technical principles, practical experience and industry trends in three dimensions, in-depth analysis of the core differences between the two and the logic of choice. What is casting? Casting is melting metal, manufacturing casting, and pouring molten metal into the casting, solidification to obtain a certain shape and performance of the casting molding method. Casting and other parts molding process, compared with low production costs, process flexibility, almost independent of the size and shape of the part...
03-10
2025
Plastic spraying process and its characteristics
The process principle of plastic spraying Electrostatic powder coating technology through high-voltage electrostatic adsorption to achieve high efficiency coating. The core process is: compressed air will be powder coating conveyed to the electrostatic spray gun, the muzzle of the high-voltage generator produces 80-100kV static field triggered corona discharge, so that the atomized powder charged; charged particles in the electric field under the action of directional adsorption on the surface of the grounded workpiece, along with the thickening of the coating to form a charge buildup, the uniformity of the film through the homogeneous static repulsive autonomy control; and ultimately, the formation of dense film by the high-temperature curing to complete the whole process of industrialized application from powder adsorption to coating formation. The whole process from powder adsorption to coating molding is completed. Workflow Process Name Process Purpose and Detailed Steps Related Equipment Related Materials 1. Pre-treatment Purpose: Remove the pollutants on the surface of the workpiece to form a phosphate layer that prevents rust and enhances adhesion Detailed Steps: ① Degreasing: Acidic de...
03-08
2025
In-depth analysis of the entire friction welding process
Friction welding definition Friction welding is the use of relative friction movement of the weldment to produce heat to achieve a reliable connection between the materials of a pressure welding method. The welding process is under the action of pressure, the relative movement of the material to be welded between the friction, so that the interface and its nearby temperature rises and reaches a thermoplastic state, with the role of the top forging force interfacial oxide film broken, the material undergoes plastic deformation and flow, through the interface element diffusion and recrystallization of the metallurgical reaction and the formation of joints. Friction welding principle Two round section of the metal workpiece in the friction welding before, respectively, can be clamped in the rotating chuck and can move forward to pressurize the chuck. At the beginning of welding, the workpiece 1 rotates at high speed, the workpiece 2 moves in the direction of the workpiece 1 and contacts, and a large enough friction pressure is applied to start the friction heating process. After a period of friction, the joint...
03-04
2025
The application of automotive aluminum die casting lightweight technology path and practice exploration
Author: Senior Engineer of Ningbo Hexin Molding Co., Ltd (20 years of experience in casting industry) 1. Strategic Value of Aluminum Alloy Materials With the deepening of global carbon emission reduction policy, the automotive industry is experiencing a structural transformation from "steel-based" to "multi-material synergy". Aluminum alloy materials have become the core breakthrough in realizing vehicle lightweighting by virtue of their low-density characteristics and recyclable advantages. In the architecture of new energy models, aluminum alloy die castings have penetrated into the body frame, three electric systems, chassis structure and other key areas, forming a lightweight solution covering the whole body. Current industrial practice shows that the use of modular die casting technology can significantly reduce the number of parts and assembly complexity. Typical cases show that through the structural integration and process innovation, a model of body-in-white successfully realized material weight reduction and production...
Reasons for choosing Ningbo Huxin
As a technology leader in the field of aluminum alloy casting for more than 20 years, Ningbo Hexin has become a preferred partner in the automotive, new energy and high-end equipment manufacturing fields by virtue of the layout of the whole industrial chain and continuous innovation. The following is an analysis of the core competitiveness of the enterprise from the three dimensions of intellectual ability, quality control and technology cross-border:
✅ Smart Express
Digital full-process production, intelligent die-casting clusters to support rapid customization, delivery cycle speed up beyond the industry standard, yield rate is steadily high.
✅ Military quality
International standard certification system, strict control of casting internal defects, double precision testing to ensure the stability of extreme working conditions.
✅ Cross-border innovation
Multi-field material database support, 5G heat dissipation/photovoltaic bracket technology breakthroughs, adapted to new energy, high-end equipment and other cutting-edge needs.
