At a glance
| Booth | R7121 |
| Country | HK |
| Website | www.dongrong.net/en/product.php |
Company profile
Dong Rong Electronics Co Ltd was established in Hong Kong in June 1993 and supplies various raw materials, components, and production equipment for electronics-related manufacturing needs. The company distributes production equipment for components such as semiconductors and identifies the Semiconductor Optoelectronic Industry as one of the fields served by its equipment offering. Dong Rong Electronics Co Ltd is described as having offices, subsidiaries, and factory resources in Hong Kong, Shenzhen, Taiwan, and Suzhou, extending its operating resources across several locations in the region. Its broader electronics-manufacturing offering includes raw materials, components, production equipment, and technical services, rather than limiting the business to a single equipment category. The company's organized product and service areas include crystal and SAW devices, semiconductor optoelectronics, electronic ceramics, touch-panel materials, packaging materials, ultrasonic sensors, and vacuum-related equipment or services.
Exhibits
One supplied machine mounts a seal ring on a metal lid, performs positioning spot welding, and then uses parallel seam welding to hermetically package a ceramic base together with the metal lid. Before mounting, the machine is configured with a vacuum Oven Chamber, adding the stated vacuum-oven step ahead of the lid-mounting and welding sequence. After mounting, parallel seam welding is performed with 2 welding heads and X and Y seam-welding points in a Nitrogen atmosphere, defining the welding-head count, welding directions, and process atmosphere used by the machine. The sealing process applies the principle of Joule's law by energizing between the lid and the seal ring of the base so that the cover and base are welded together to seal the component. A new type of high-frequency welding power supply with changeable pulse width is used to improve the reliability of welding quality, making pulse-width adjustment part of the stated welding-control method. The hermetic-welding equipment corresponds to 2016 through 5070 SMD SAW filter products, providing the explicit SMD SAW filter product-size range listed for this welding application. A second device is a fully automated system for electrical-parameter checking, classification, surface laser printing, and tapping of SMD-type acoustic-wave filters. Its basic automated sequence conveys components with a feeder, checks their facing direction and corrects components that face the wrong way, performs electrical-parameter checking and classification, laser-prints qualified components, and then conveys them to tapping and packaging. The automated acoustic-wave-filter system supports very small component sizes from 3.0X3.0 to 1.0X1.4 and is designed so that the setting for component size can be exchanged easily. Dong Rong Electronics Co Ltd also presents HAMAI grinding equipment from a company with 90 years of experience producing double-sided grinding machines, including ultra-precision double-sided and single-sided grinding machines and polishing machines. HAMAI models range from the small 3BN to the large 74BN and are listed for processing crystal, silicon, glass, sapphire, lithium niobate, lithium tantalate, ceramics, computer hard disks, LCD, and other products. Together, the equipment offering therefore covers hermetic seam welding for SMD SAW filters, automated electrical checking and sorting with laser printing and tapping for SMD acoustic-wave filters, and grinding or polishing equipment spanning multiple crystal, semiconductor, glass, ceramic, storage, and display materials.
Capabilities and products
- Supply of parallel seam-welding hermetic packaging equipment
- Supply of SMD acoustic-wave filter testing, sorting, laser marking and taping equipment
- Supply of single-sided and double-sided grinding machines
- Supply of polishing machines