The key point of quality control of wire harness IPC620

The key point of quality control of wire harness IPC620     Contact us to get IPC620 english version printed book   I. Processes Involved in Wire Harness Manufacturing   The processes involved in wire harness manufacturing include but are not limited to:   Cutting: Refers to cutting electronic wires or cables to the required length using machines or manually, without damaging the insulation or outer sheath.   Outer Sheath Stripping: The outer sheath usually refers to the cable sheath. The outer sheath stripping machine should not scratch or cut the insulation of the core wires when stripping the outer sheath. Any cuts, breaks, cracks or splits in insulation (not shown). u Insulation thickness is reduced by more than 20% . u Uneven or ragged pieces of insulation (frays, tails, and tags) are greater than 50% of the insulation outside diameter or 1 mm [0.039 in] whichever is more . u Insulation is charred . u Insulation is melted into the wire strands .   Core Wire Stripping: Adjust the core wire stripping machine to the required size for stripping, and be careful not to scratch or cut the copper wires.   Crimping: Select the appropriate blade according to the terminal size. Crimp the prepared wire with the terminal crimp part using the blade, ensuring a firm crimp and that the appearance and pull force of the crimped terminal meet the standards.   Put on connector: Insert the qualified crimped terminal wires into the matching connector housing. A clear click sound will be heard when the connector is fully inserted.   Wire Twisting: Adjust the wire twisting machine to the appropriate height to ensure that the copper wires are not flattened or tangled, and the twisted conductor is in a uniform spiral shape.   Tinning: Apply flux to the prepared...

How We Build Wire Harness Drawings ?

Overview of the Necessity and Importance of  Wiring Harness Drawings Build wire harness drawings are essential for providing a clear and detailed representation of the harness layout, connection relationships, and component information. These drawings ensure the accuracy, reliability, and safety of the wiring harness. They illustrate the harness routing, including starting points, endpoints, and intermediate connection points, as well as the harness path. Moreover, the drawings depict the connection methods and relationships of each wire within the harness. As the primary source of information for wiring harness production, these drawings play a fundamental and critical role in the manufacturing process. Wire harness drawings build from customers' drawings : QL-Custom's Process from Inquiry Receipt to Drawing Submission for Customer Review : Upon receiving an inquiry, including customer drawings or samples, our engineers determine the sourcing strategy, whether it's original or domestic materials. They then source quotes from multiple suppliers, comparing prices to offer the best option to the customer. After price confirmation, a sample request is submitted. Engineers create drawings based on customer-provided information or samples. After internal review and approval, the drawings are sent to the customer for confirmation.   Drawing Considerations and Details – Analyze customers' drawing to generate our Drawing : [caption id="attachment_4230" align="alignnone" width="796"] Wire Harness Drawings[/caption]   As shown above, a typical drawing consists of seven main sections: Drawing information: Customer part number, internal part number, drafter, reviewer, revision level, date, etc. Revision history: Details of any changes made to the drawing. Quality and testing requirements: Specific standards and tests the harness must meet. 2D layout: A comprehensive view showing component placement, wire lengths, and other crucial manufacturing details. Circuit diagram: Illustrates the point-to-point connections within the harness. Bill of Materials (BOM): Lists all components, including wires, terminals, connectors, and sleeving, with quantities and internal part...

What Plastics Can Be Used for Wire Insulation and Cable Jacketing ?

What Plastics Can Be Used for Wire Insulation and Cable Jacketing ? Wire insulation and cable jacketing are essential in electrical applications, meaning that the materials used for them are crucial in ensuring the safety, performance, and durability of cables. So, what plastics can be used as insulation and jacketing materials for wires and cables?   Understanding Wire Insulation and Cable Jacketing   Definition of Wire Insulation To make good use of wire insulation, we need to know what it is. Wire insulation is a layer of non-conductive material that surrounds a conductor. It effectively prevents leakage and protects the conductor from external environmental factors, avoiding accidents such as leakage, short circuit, and electric shock caused by contact between the internal conductor and the outside world. Definition of Cable Jacketing Cable jacketing is a protective layer that wraps around multiple insulated wires or cables. They are used to protect internal wires from external environmental damage, such as physical damage, moisture, chemicals, and UV radiation. Wire insulation primarily targets individual wires, while cable jacketing can protect multiple wires or cables [caption id="attachment_5047" align="alignnone" width="635"] Wire Insulation and Cable Jacketing[/caption]   What Materials Are Used for Wire Insulation? Polyvinyl Chloride (PVC) PVC has excellent electrical properties, good flexibility, and can be used in humid environments, making it one of the most commonly used materials for wire insulation. The price of PVC is very advantageous, which is also an important reason for its widespread use. [caption id="attachment_5043" align="alignnone" width="558"] Wire Insulation and Cable Jacketing[/caption]   Cross-linked Polyethylene (XLPE) XLPE itself is not a plastic, but the PE rubber compound is irradiated after extrusion to cross-link its chemical molecules, making it more temperature-resistant after aging. XLPE has extremely high heat resistance. It can withstand higher temperatures. Cables insulated with XLPE can work in an...

Single-core UL and Europe Electronic Wire?

What is single wire ?   The term "single core wire" is often heard, but what exactly is it? Let's explore this ubiquitous component, present in almost every aspect of our lives, from its definition and applications to its advantages. A single core wire is an electrical wire consisting of a single conductor encased in insulation. The conductor is typically made of bare copper or copper plated with tin, silver, or nickel. The insulation is commonly made of PVC, but other materials can also be used. The conductor structure can be stranded or solid copper, depending on customer requirements. From simple circuits to complex telecommunication systems, from high-tech products to simple electronic devices used in our daily lives, single core wires are indispensable. The primary difference between single core wires and multicore cables lies in the number of conductors used.   UL Standard Single Core Wires   UL 1015 - Single Core PVC Insulated Wire Description: Wires using PVC as insulation material are suitable for use in dry locations. Applications: UL1015 hook-up wires are suitable for use in control circuits, appliances, and other electrical equipment.   UL 1007 - Single or Stranded PVC Insulated Wire Description: Like the 1015, UL 1007 wire also uses PVC as its insulation material. However, 1007 is designed for use in low voltage environments and is more flexible. Applications: Its flexibility makes it often used for internal wiring of appliances and electronic equipment.   UL 1569 (Single Conductor) Description: As the name suggests, a single conductor is composed of a single conductor, using a single or stranded 30~10AWG tinned or bare copper. This conductor is flat and flexible, with less restrictions on the use of space. Applications: Commonly found in electronic equipment, automotive applications, and other specialized uses. European Standard Single Core Wires   1....

What is FPC FFC Cable?

Introduction to FPC and FFC Cables   QL-Custom can customize Flexible Printed Circuit (FPC) cables, which can flexibly connect various electronic components. Due to their high flexibility, FPC cables can be used in printed circuit boards, computers, and other space-saving electronic devices.   QL-Custom can also customize Flat Flexible Cables (FFC). Similar in application to FPC cables, FFC cables have a different structure. They are in a flat ribbon shape and are suitable for organized wiring solutions. FPC and FFC cables are an indispensable part of electronic devices, ensuring effective signal transmission and connection.   Main Differences between FPC and FFC Cables   QL-Custom can customize all cables according to your specific needs, whether you need FPC or FFC cables. As mentioned above, the main difference between these two types of cables lies in their structure. The conductors of FFC cables are mainly copper, which is used as the conductor for many wire boxes and cables because of its good conductivity and flexibility. In contrast, the conductors of FPC cables use thinner copper foil or metal sheets, allowing FPCs to be flexibly used in complex designs or in spaces that are more compact.   QL-Custom can provide appropriate recommendations on when and where to use FPC cables and FFC cables based on the actual needs of your project. For example, if your application requires high flexibility and compact design, FPC cables would be the better choice. However, if you simply need a straightforward connection, FFC cables would suffice.   A good understanding of the differences between these cables makes it easier to make the right choice when selecting the appropriate cable for your electronic project.

What is Flat Ribbon Cable?

Introduction to Flat Ribbon Cable Flat ribbon cable is usually connected by multiple electronic wires in parallel. This structure could simplify the harness design of the overall circuit and improving space utilization. Flat ribbon cable is generally used in computers, printers and other equipment that require compact and flexible wiring. Therefore, flat ribbon cable is also one of the most common types in QL-Custom customized wiring harness solutions. Types of Flat Ribbon Cables There are different types of flat ribbon cables to suit different scenarios. One of the most common types in QL-Custom's custom cases is the IDC (Insulation Displacement Connector) flat cable harness. Its biggest feature is that the connector can be quickly and easily terminated without stripping the insulation of individual wires, which makes it very time-saving and efficient in production.   Another common form of flat ribbon cable is multi-core cable flat cable. Compared with single-core wiring, this type of wiring harness can transmit more signals in the same time and is suitable for more complex data communication and control systems.   Like ordinary wires, flat ribbon cable are divided into two types: shielded and unshielded. Compared with unshielded ones, the main function of shielded ones is to prevent electromagnetic interference, which is suitable for electronic equipment and scenarios with high requirements for signal anti-interference.   Additionally, flat ribbon cable are generally color-marked. In complex scenarios, different colors help people quickly identify and distinguish wires, thereby reducing the possibility of errors during installation and maintenance.     What QL-Custom can do for you QL-Custom can customize different ribbon cable solutions including IDC, multi-core cable, shielded or unshielded cables, and color-marked cables to meet your specific needs. Whether you need customization now or in the future, understanding the above cable information will help you choose the right cable.

Single Wire vs. Multi Core Cable

Single Wire vs. Multi Core Cable knowledge base   What is single wire? What is multi-core cable? And what are the main differences between them? For friends who need to use wire harnesses in their equipment, it is very necessary and important to figure out these questions. In this article, QL-Custom will explore the characteristics and advantages of Single wire and multi-core cable, and how each type affects performance and different applicable scenarios.   Understanding Single wire   What is Single wire?   Single wire generally refers to a wire with an insulating sheath wrapped around the conductor. The conductor material is usually made of bare copper or alloy copper. Its conductor structure can be a single solid copper or multiple strands of copper wire twisted together. Its common insulation layer materials include PVC, PE, TPEE, silicon, Teflon, etc.     Types of  Single wire   Based on the above different structures of conductor and insulation layer combination, single core wire can be of many types. Examples are as follows:   Bare single wire: Wires only made of conductors. It has good conductivity, but since there is no insulation layer, bare wires require special attention to protection during transportation and storage.   Insulation Single wire: It is composed of an insulating layer wrapped around a conductor. The main function of the insulating layer is to protect the conductor inside the wire. Common insulating materials include PVC, PE, silicone, TPEE, PP and PFA, FEP, PTFE, which are suitable for different rated temperatures and voltage capacities.   Shielded single wire:   This type of wire has a shielding layer added between the insulation layer and the conductor. It is a type commonly used in the field of new energy, such as XL-PE double-insulated shielded wire. This type has higher safety and data...

Which Cable and Wire Brands Are Popular?

Which Cable and Wire Brands Are Popular?   When choosing cables and wires for various applications, brand is an important reference in terms of quality and performance. This article would like to introduce different brands that are widely recognized for reliability and innovation in Europe and North America.   Popular Cable Brands in Europe   Have you ever heard or familiar with any famous European cable brand? Let’s learn together about followed companies which are known for their high-quality products and wide range of cable solutions.   Nexans   Nexans is a global leader brand in electrification with the history over 120 years, providing a wide range of products to various industries such as energy, telecommunications and construction. Their commitment to sustainability and innovation makes this French brand the first choice for many businesses.   Leoni AG Leoni AG headquarters in Germany, specializing in the production of wires and cables. It is well known for its high-performance cables, especially in the automotive and industrial sectors which could meet the stringent requirements of modern applications.     Eele-Fonika   Tele-Fonika is a Poland brand, offering a wide range of products including power cables, telecommunication cables and specialty cables. Its high quality and reliability make it a trusted brand in the industry.     Lapp Lapp was founded in Germany by Oskar LAPP. It is a multinational group with 40 subsidiaries all over the world, providing solutions for automation, robotics and other demanding fields. Let’s continue to look at some well-known brands in North America.     Popular Cable Brands in North America   Alpha Alpha headquarters in America, well known for its high quality wire and cable products, especially in the aviation and automotive industry. They enjoy high population and satisfaction among customers all over the world.     Belden Belden...

Custom Wire Harness

Custom wire harness , what is it, types, differences, applications   Understanding Better from QL-Custom : Wire Harness, Cable Assemblies, And Cable Harness   In QL-Custom, we have monthly training on wire harness assemblies knowledges. Some of our customers, even our competitors, don't understand what is real difference between custom wire harnesses, cable assembly, and cable harnesses . Today, we give you very simple identifications.   Before we talk, we should make it clear what a wire is and what is cable.   Hook-up wires are single wires with insulation, single colour or double colour; they don't relate to the conductor; Cable is multiple single wires in a bundle with a plastic jacket. With shielding or non-shield.       Ok, now you are clear what is Wire , and what is Cable , and you can guess what I want to talk about next!  A wire harness is a harness that excludes multiple cables, including different wires, connectors, and terminals assembled into one set.         So the Cable assembly is clear now A Cable assembly, which only includes at least one multiple-core or more than one-piece cable, connectors, terminals, or soldering wires, So the Cable assembly is also clear now Cable assembly only includes at least one multiple-core or more than one-piece cable, connectors, terminals, or soldering wires and over-molding them into one set. over molding into one set.       And the cable harness—do you understand now ?  You can give David a call to discuss more. +86 13790139296       Custom Cable And Wire Harness Assemblies Application   Computer   A computer wire harness, also known as a cable harness, cable assembly, wiring assembly, or wiring loom, is a systematic and organized arrangement of wires, cables, and other components that transmit electrical...

Why Custom Over-Molded Cables Last Longer and Work Better

At QL-Custom Technology Limited, we are dedicated to pushing the boundaries of cable assembly technology. We provide custom over-molded cable assemblies and wire harnesses for various applications. Our company excels in creating seamless, durable cables that integrate wire and connector into a single, reliable unit. Using cutting-edge manufacturing processes, we produce custom-molded wires to meet the rigorous demands of industries worldwide. What are Over-Molded Cables? Over-molded cables are complete assemblies that combine the wire and connector into a singular, robust piece. The process involves placing the cable assembly inside a mold cavity, where molten plastic is injected, creating a sealed protective coating over the cable. This innovative manufacturing method enhances the cables' durability, flexibility, and longevity. At QL-Custom, our modern facilities, which include warehousing, engineering, production, and support services, ensure that every product meets the highest standards. We specialize in various plastic molding products, including GPS trackers, vacuum cleaner parts, speaker frames, and molded connectors. Our custom-molded - cables have earned a reputation for reliability in the automotive and solar power industries, with solutions tailored specifically for each customer. Our team works directly with you, guiding the design and production process to meet your specifications. After production, all products undergo rigorous testing to meet your needs and exceed industry standards. Types of Molded Cables We offer a variety of molded cables designed for specific applications, ensuring high performance and reliability across different industries: Custom Molded - Cables: Tailored solutions to meet unique customer requirements, offering flexibility in design and functionality for any application. Rubber Molded - Cables: These are highly flexible and durable cables, ideal for environments with high stress, vibration, or frequent movement, ensuring long-lasting performance. Plastic Molded - Cables: Cost-effective molded cables that provide excellent strength, durability, and protection for everyday applications in various industries. Waterproof Molded -...