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Views: 0 Author: Site Editor Publish Time: 2025-08-04 Origin: Site
I. Raw Material Selection: Laying the Foundation for Quality
Stainless steel 316, due to the addition of molybdenum (Mo) in its chemical composition, significantly enhances the material's corrosion resistance on the basis of chromium (Cr) and nickel (Ni), especially its resistance to strong corrosive media such as chlorides and sulfates. It is widely used in fields with extremely high requirements for corrosion resistance, such as chemical engineering, Marine engineering, food and medical care. When customizing equipment, the raw material purchasing team will strictly screen suppliers to ensure that each batch of stainless steel 316 raw materials is accompanied by complete quality certification documents, detailing key indicators such as chemical composition and mechanical properties. Meanwhile, advanced spectrometers are used to conduct random inspections on the raw materials entering the factory, accurately determining the content of elements such as chromium (16-18%), nickel (10-14%), and molybdenum (2-3%). By comparing with the standard components, the error is controlled within an extremely small range to prevent substandard raw materials from flowing into the production process.
Ii. Design Phase: Catering to diverse needs
In-depth communication of requirements: At the beginning of the design process, the engineering team closely communicates with the client to comprehensively understand information such as the equipment's usage scenarios, process requirements, and expected output. For instance, in the chemical industry, containers used for storing highly corrosive liquids have strict requirements for the sealing performance and chemical corrosion resistance of the equipment. For the conveying pipelines in the food processing field, it is necessary to ensure that the materials are hygienic, non-toxic, easy to clean and meet food safety standards.
Utilize advanced design software: With the aid of professional 3D design software such as CAD (Computer-Aided Design) and SolidWorks, transform customer requirements into precise digital models. Designers can repeatedly optimize the structure, size, internal flow channels, etc. of the equipment in a virtual environment, simulate the operating status of the equipment, identify potential problems in advance and correct them, ensuring that the design plan not only meets the functional requirements but also has good manufacturability and economy.
Mechanical property calculation and verification: For the possible working conditions such as pressure, temperature, and mechanical stress that the equipment may withstand, detailed mechanical simulations are conducted using finite element analysis (FEA) software. Take the design of pressure vessels as an example. Through FEA, the stress distribution of components such as the cylinder, head, and nozzles under different pressures is precisely calculated, and the wall thickness is reasonably determined to ensure the safe and reliable operation of the equipment under extreme working conditions, while avoiding material waste caused by excessive design.
Iii. Finished Product Manufacturing: Exquisite craftsmanship creates quality products
Blanking and cutting: According to the design drawings, high-precision cutting technologies such as laser cutting and plasma cutting are used to blanking stainless steel 316 plates and pipes. The laser cutting accuracy can reach ±0.1mm, with smooth cuts and no burrs. The heat-affected zone is extremely small, which can retain the material properties to the greatest extent, ensure the precise dimensions of the components, and lay a solid foundation for subsequent assembly.
Forming processing: For complex-shaped components such as cylinders, heads, and elbow pipes, professional equipment like plate rolling machines, stamping machines, and spinning machines are used for forming processing. During the process of rolling the cylinder, the speed and pressure of the rolling plate are strictly controlled, and the roundness and straightness of the cylinder are monitored in real time, with the deviation controlled within the standard range. The stamping of the head is carried out using a specially designed die, which is formed in one stamping process to ensure that the head has a regular shape and uniform wall thickness.
Welding process: Welding is a key process in the manufacturing of stainless steel 316 equipment, and argon arc welding (TIG) or gas metal arc welding (MIG) processes are mostly adopted. Argon arc welding is widely used in parts with extremely high requirements for welding quality due to its advantages such as stable arc, concentrated heat, beautiful weld formation and no spatter. MIG welding is suitable for welding thicker plates and has a higher efficiency. During the welding process, ER316L welding wire that matches the base material is selected. Parameters such as welding current, voltage, and welding speed are strictly controlled. Each weld seam must be carefully operated by professional welders to ensure uniform penetration, no pores, cracks or other defects. The strength and corrosion resistance of the welded joint are not lower than those of the base material.
Surface treatment: To further enhance the corrosion resistance and aesthetic appeal of the equipment, surface treatment is required after manufacturing. The commonly used treatment methods include mechanical polishing, electrolytic polishing and pickling passivation. Mechanical polishing reduces surface roughness and enhances smoothness through grinding. Electrolytic polishing utilizes electrochemical principles to level the metal surface at the microscopic level, achieving a mirror-like effect. Pickling and passivation is a process that uses specific acid solutions to remove surface oxide scale and impurities, while forming a dense passivation film on the surface to enhance corrosion resistance. Different industries choose appropriate surface treatment processes based on their actual needs. For instance, the food and medical industries mostly adopt electrolytic polishing, while the chemical industry places more emphasis on pickling and passivation.
Quality Inspection: Adhering to strict quality inspection standards, we conduct comprehensive inspections on each customized device. Visual inspection ensures that the surface of the equipment is free of scratches, dents, deformations and other defects. Dimensional measurement ensures that the dimensions of each component and the entire equipment comply with the requirements of the design drawings. Non-destructive testing employs techniques such as ultrasonic testing (UT), radiographic testing (RT), and magnetic particle testing (MT) to inspect the internal quality of welds and promptly detect minute defects. Pressure tests are conducted through water pressure or air pressure tests to examine the strength and sealing performance of equipment under the designed pressure. Only the equipment that passes all the inspection items can be labeled as qualified and proceed to the next stage.
Iv. Overseas Transportation: Safely delivered to all parts of the world
Packaging protection: Customized stainless steel 316 equipment is usually large in size, heavy in weight and high in value, so packaging protection is of vital importance. The main body of the equipment is first wrapped with multiple layers of plastic film to prevent moisture and dust. Then, wrap the parts that are prone to collision with soft materials such as pearl cotton and foam boards to cushion the vibration and shock during transportation. Finally, it is packed into custom-made wooden packaging boxes. The interior of the box is reinforced with Angle steel, channel steel, etc., to ensure that the equipment is not damaged during long-distance transportation. For precision components, vacuum packaging will also be adopted separately to further protect their accuracy and performance.
Selection of transportation mode: Based on factors such as equipment size, weight, delivery time and destination, a suitable transportation mode should be comprehensively selected. Sea transportation, with its advantages of large capacity and low cost, has become the first choice for overseas transportation. For bulky equipment, container transportation or bulk carrier transportation is generally adopted. If the equipment is urgently needed and the weight is relatively light, air transportation can also be considered to shorten the transportation time, but the cost is relatively high. In addition, for some inland countries, it is also necessary to combine road and railway transportation for intermodal transport to ensure that the equipment can be smoothly delivered to the designated location of the customer.
Logistics tracking and insurance: During the transportation of equipment, through an advanced logistics tracking system, customers and manufacturers can obtain real-time information such as the location and transportation status of the goods, achieving full-process visual management. At the same time, to avoid potential risks during transportation, sufficient transportation insurance will be purchased for the equipment, covering situations such as damage, loss, and delay of the goods. In case of any accident, claims can be obtained promptly to ensure that the customer's interests are not compromised.
From raw materials to finished products, and then crossing mountains and seas to reach the customers, every step of the customized stainless steel 316 equipment embodies the wisdom and hard work of the professional team. With high-quality raw materials, precise design, exquisite manufacturing techniques and reliable transportation guarantees, this type of equipment can operate stably in high-end manufacturing fields around the world, injecting strong impetus into the development of various industries.
