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30

2024-07

Powder Coating Process

Powder coating is a surface treatment method in which plastic powder is sprayed onto parts. Commonly referred to as electrostatic powder coating, this process has been widely adopted internationally since the 1980s as an effective decorative technique for metal surface finishing. Compared with conventional spray painting, powder coating offers numerous advantages, including advanced processing technology, energy efficiency, safety and reliability, and vibrant coloration. As a result, it is frequently used in light industry and residential decoration applications. The underlying principle involves charging plastic powder through high-voltage electrostatic equipment; under the influence of the electric field, the coating is sprayed onto the workpiece surface, where the powder adheres uniformly to form a powdery coating. Subsequently, after high-temperature baking, the powder melts and flows to achieve leveling and curing, transforming into a dense, durable final protective layer with varying surface finishes that firmly bonds to the workpiece. Advantages No thinning agents are required, making the process environmentally friendly and non-toxic to humans; the coating exhibits excellent appearance quality, strong adhesion, and high mechanical strength; the curing time during spraying is short; the coating demonstrates significantly superior corrosion and wear resistance; no primer is needed; application is simple and places low demands on operator skill; the overall cost is lower than that of traditional spray painting; in certain applications, electrostatic powder coating is explicitly mandated; moreover, the electrostatic powder-spraying process does not suffer from the common issue of paint running or sagging seen in conventional spray painting. Process Principle The process leverages corona discharge to enable the powder coating to adhere to the workpiece. Specifically, the powder coating is conveyed by a compressed-air system from the powder supply unit to the spray gun, where a high voltage generated by a high-voltage electrostatic generator is applied at the nozzle. Due to corona discharge, a dense cloud of charges forms in the vicinity of the nozzle. As the powder is ejected from the nozzle, it becomes charged particles that are attracted by electrostatic forces to the workpiece, which carries an opposite charge. As more powder is sprayed, the accumulated charge increases until, upon reaching a certain thickness, electrostatic repulsion prevents further deposition, thereby forming a uniform powder coating of consistent thickness across the entire workpiece. The coated part is then heated, causing the powder to melt, flow, and cure, ultimately forming a hard, durable coating film on the surface.

2024-07-30

Powder Coating Process

09

2024-05

What is a sheet metal part?

Sheet Metal Parts: Sheet metal is a comprehensive cold-working process applied to thin metal sheets—typically less than 6 mm thick—and encompasses operations such as shearing, punching/cutting/combined punching and cutting, bending, welding, riveting, splicing, and forming (e.g., for automobile bodies). A defining characteristic is the uniform thickness of each part. Products manufactured through sheet-metal processes are referred to as sheet-metal parts. The specific meaning of “sheet-metal part” can vary across industries, often serving as a term used during assembly or component integration. Sheet-Metal Materials: A wide variety of sheet-metal materials are suitable for stamping and other forming processes. In the electronics and electrical appliance industry, common sheet-metal materials include: 1. Ordinary Cold-Rolled Steel Sheet SPCC SPCC refers to steel ingots that are continuously rolled by a cold-rolling mill into steel coils or sheets of the desired thickness. SPCC has no surface protection, making it highly susceptible to oxidation when exposed to air—especially in humid environments, where oxidation accelerates, leading to the formation of dark-red iron rust. Therefore, SPCC surfaces typically require painting, electroplating, or other protective coatings before use. 2. Electro-Galvanized Steel Sheet SECC SECC is made from standard cold-rolled steel coils, which undergo degreasing, pickling, electro-galvanizing, and various post-treatment processes on an automated continuous galvanizing line to produce electro-galvanized products. SECC not only retains the mechanical properties and similar formability of ordinary cold-rolled steel sheets but also offers superior corrosion resistance and an aesthetically pleasing finish. As a result, it is highly competitive and increasingly replacing traditional materials in the electronics, home-appliance, and furniture markets. For example, SECC is widely used in computer cases. 3. Hot-Dip Galvanized Steel Sheet SGCC Hot-dip galvanized steel coils are produced by first cleaning and annealing semi-finished hot-rolled or cold-rolled steel, then immersing the material in a molten zinc bath at approximately 460°C to coat the steel surface with a layer of zinc. The material is subsequently tempered, leveled, and subjected to chemical treatments. Compared with SECC, SGCC is harder, less ductile (making it unsuitable for deep-drawing applications), has a thicker zinc coating, and exhibits poorer weldability. 4. Stainless Steel SUS301 SUS301 contains a lower chromium content than SUS304, resulting in slightly poorer corrosion resistance. However, after cold working, it achieves excellent tensile strength and hardness, along with good elasticity, making it ideal for applications such as spring clips and EMI shielding. 5. Stainless Steel SUS304 One of the most widely used stainless steels, SUS304 owes its superior corrosion and heat resistance to its nickel content. It also boasts outstanding mechanical properties, does not harden through heat treatment, and lacks significant elasticity.

2024-05-09

What is a sheet metal part?

14

2025-04

Application Requirements for Welding and Machining of Metal Enclosures

During the welding and machining of metal enclosures, thick-plate welding and cutting involve components that are large in size and mass, with complex structures, making it difficult to ensure welding quality. Therefore, it is essential to optimize the welding process by selecting appropriate welding procedures and materials to prevent cracking, while strictly controlling welding distortion, dimensional deviations, and tolerances. Surface edge profiling must also be performed to ensure accurate machining of all parts and successful completion of the welding task. To address the issue of wear in the bearing bores of the main body of cast-iron grinding machines, a non-preheated enclosure welding repair method was adopted. For critical cast-iron components, online repair of multiple castings has provided both theoretical foundations and practical examples for the online repair of worn bearing bores in final reduction gears, resulting in significant improvements in repair outcomes. Currently, laser seal welding and laser penetration welding are being used to resolve production issues related to restarting the manufacturing of component boxes. As environmental protection, energy conservation, and consumption reduction become increasingly important, laser welding technology will see widespread application in the production of inflatable boxes. Several self-unloading truck manufacturers in the industry have already equipped themselves with box-type welding robots. Disclaimer: Some publicly available materials posted on this website are sourced from the Internet, intended solely to disseminate additional information and facilitate online sharing, and do not necessarily reflect the views or endorse the authenticity of such content.

2025-04-14

Application Requirements for Welding and Machining of Metal Enclosures

22

2025-10

What are the key considerations when customizing sheet-metal enclosures for electric-vehicle charging stations, according to sheet-metal manufacturers?

Cabinet and enclosure products are now commonplace in our daily lives, yet many people still know very little about them. To gain a better understanding of cabinets and enclosures, it’s best to start with the basics. With this in mind, Qingdao Haibo would like to provide an overview of cabinet and enclosure fabrication. During the fabrication process, multiple layers of vertically folded grooves are added to the cabinet opening. This not only enhances the structural rigidity of the enclosure but also helps prevent water and dust from entering when the door is opened. In addition, two perforated mounting strips are fixed on both sides of the cabinet door during fabrication, allowing for quick and easy installation of cable trays, conduit, and other components. Both the cabinet body and the door are equipped with grounding terminals. The mounting plates, which are secured to the cabinet using rivets, can be easily removed, and the inside of the door features a foam sealing gasket. The above provides a brief introduction to cabinet and enclosure design; by familiarizing yourself with these principles, you’ll be well-prepared to apply them when needed. Disclaimer: Some of the publicly available materials posted on this website are sourced from the internet, intended solely to disseminate additional information and facilitate online sharing. These materials do not necessarily reflect the views of this site, nor does this site vouch for their accuracy or authenticity.

2025-10-22

What are the key considerations when customizing sheet-metal enclosures for electric-vehicle charging stations, according to sheet-metal manufacturers?

27

2026-02

What are the key considerations when customizing sheet-metal enclosures for electric-vehicle charging stations, according to sheet-metal manufacturers?

汽车充电柜钣金厂家告诉大家定制钣金加工柜有哪些注意事项? 汽车充电柜钣金厂家：定制钣金加工柜有哪些注意事项? 随着木质橱柜的逐渐饱和，钣金橱柜开始进入人们的视野，钣金橱柜以其好的防潮防火性能和逐渐丰富的外观，受到很多业主的青睐，所以有很多消费者是根据厨房空间的大小来钣金加工橱柜的，但是在钣金定制加工橱柜的时候，往往会遇到很多麻烦，不知道如何下手，今天汽车充电柜钣金厂家小编就来介绍一下钣金定制加工柜应该注意哪些方面! 1.制作橱柜并不简单，不仅要合理安排门上的测量时间，还要准确测量厨房的大小。 每个厨房设计师的主要职责就是让定制的厨房尺寸更加准确无误，因此，测量业主家中燃气表的安装位置和高度，洗手池的位置和高度，烟道的布局和高度，水管的走向，是每个厨房设计师的首要任务。 2.近年来，钣金橱柜越来越为大众所熟悉，成为人们追求健康生活品质的厨房标配，所以在选择橱柜的时候，首先要注意其材料的环保性，就像钣金厨柜一样，原材料的选择和整个生产过程都不含有害物质，保证了产品的健康环保性能。 3.每个人的家庭厨房模式不一样，所以每个人的家庭橱柜造型也不一样。 现在常见的橱柜款式有字型、L型、U型、岛型等，汽车充电柜钣金厂家建议橱柜设计从厨房格局入手，及时与设计师沟通，表达自己的喜好，更好的利用橱柜。 4.有些业主在定制橱柜时，通常只关注材质和造型，而忽略了橱柜的五金，其实五金配件的质量也很重要，直接影响到橱柜在以后使用中的舒服性，尤其是钣金厨柜的高品质和长寿命，五金配件的质量也需要选择品牌高质量的五金配件，以匹配其50年的使用寿命，市场上基本都选择品牌金属柜，品牌金属柜整体价格高于普通杂牌柜。 5.为了追求时尚，有人要求厨房和餐厅设计在同一个空间，虽然在视觉上扩大了空间，但也带来了很多负面问题：烟雾影响了其他家庭空间，房子变得更加凌乱，厨房是每天排放油烟的地方，无论是油烟机、灶具还是厨柜，都要设计一个封闭的空间，防止油烟污染其他室内环境。 6.整体来说，钣金橱柜的需求需要在装修前确定，因为橱柜的生产一般需要一个月的生产周期，要提前采购，保证安装更顺畅。 以上是汽车充电柜钣金厂家小编讲解的一些钣金柜定制需要注意的事项，装修前记住这些，选择钣金定制加工柜并不难，大家都了解了吗?希望汽车充电柜钣金厂家小编讲解的内容能够帮助到大家，谢谢各位的收看，我们下期见。

2026-02-27

What are the key considerations when customizing sheet-metal enclosures for electric-vehicle charging stations, according to sheet-metal manufacturers?

16

2026-04

Causes of Burned Edges in Popular Laser Cutting Machines Used by Sheet-Metal Manufacturers of Automotive Charging Cabinets and Corresponding Solutions

Causes and Solutions for Burned Edges in Standard Laser Cutting Machines Used by Automotive Charging Cabinet Sheet Metal Manufacturers Causes and Solutions for Burned Edges in Laser Cutting Machines Today, the editor from an automotive charging cabinet sheet metal manufacturer will share with you the causes and solutions for burned edges in standard laser cutting machines, hoping that the following information will be helpful. Automotive Charging Cabinet Sheet Metal Manufacturer: Analysis of the Causes of Burned Edges in Metal Laser Cutting Reasons for Burned Edges and Slag Adhesion on Laser-Cut Sheet Metal Parts: During laser cutting of sheet metal parts, a large amount of heat is generated. Under normal circumstances, this cutting-generated heat spreads along the kerf into the workpiece metal, allowing for adequate cooling. When a metal laser cutting machine processes small holes, the area outside the hole can cool effectively; however, inside the small hole, the space for heat diffusion is limited, leading to excessive heat concentration and resulting in overburning and slag adhesion. In addition, during the cutting of thick plates, the molten metal and heat that accumulate on the material surface during piercing can disrupt the assist gas flow and cause excessive heat input, thereby leading to overburning.

2026-04-16

Causes of Burned Edges in Popular Laser Cutting Machines Used by Sheet-Metal Manufacturers of Automotive Charging Cabinets and Corresponding Solutions
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