Posts

How to reduce rework rate? Laser coding + visual inspection gives you the answer

Image
  Production not only pursues efficiency but also pays attention to quality. The openness and strong practical application capabilities of MRJ-laser laser equipment enable it, when paired with a high-precision galvanometer, to achieve a high efficiency of coding tens of thousands of products per hour. However, efficient coding alone is far from enough. , In sync with production efficiency, detection, and rejection efficiency must also be improved.   In the application of laser inkjet printing, how do we achieve high efficiency, high quality, and low rework to "have the best of both worlds"? This is inseparable from the laser inkjet coding-detection system designed by MRJ-laser  for users.   The codes assigned to products in various industries are not just simple production dates but also include one-dimensional codes, two-dimensional codes, encryption masks, etc. They can be divided into internal codes and external codes according to different application functions. ...

Analysis of the application of annular spot and oscillating welding in the laser welding of aluminum casing of power battery

Image
  1.0 Material Description:   The aluminum battery case and battery cover commonly use material 1060 industrial aluminum, its main components are as follows:   The cover has raised edges, and a stepped structure, and is snapped into the aluminum case, with the edges resting on the top of the case wall to prevent laser light leakage from damaging the core.   Welding equipment:   Laser parameters: continuous laser 2kw fiber laser, fiber core diameter 100um, focused spot diameter 200um, system magnification 2 times. 2.0 Ordinary welding Ordinary welding process parameters:   1. Laser power 1200W, speed 80mm\s, +2mm   2. Welding effect: the weld seam weld channel is neat and smooth, there is a regular fish scale pattern at the weld foot, and there is no extra high bulge on the side of the weld seam.   The molten pool is deep V-shaped with a girdle, with a depth of 1.7-1.8mm and a width of 1.4-1.5mm, which is a typical deep-melting laser weld.  ...

Exploratory application of picosecond lasers for cutting silicon carbide substrates

Image
Substrate is the underlying material of semiconductor chips, which mainly plays the role of physical support, thermal conductivity and electrical conductivity. Silicon carbide has higher electrical conductivity and stronger thermal stability than traditional silicon materials, is one of the ideal materials for making high-temperature, high-frequency, high-power, high-voltage devices, which are widely used in solar energy, automotive components , charging piles, power supplies and other areas of life and production. Silicon carbide substrate manufacturing needs to go through raw material synthesis, crystal growth, crystal cutting, wafer milling and processing, as well as cleaning, polishing, testing and many other links. Cutting link is one of the key links, due to the great hardness of silicon carbide, Mohs hardness of 9.5, and high brittleness, making the processing link cutting difficult, high breakage rate, some data show that the yield of silicon carbide processing link is about 70...

How to Clean Artwork and Ensure No Residue or Damage?

Image
  Laser cleaning can clean the surface of cultural relics made of different materials such as stone (marble, jade), metal (bronze, iron, etc.), oil painting, ceramics, parchment, paper, ivory, silk textiles, wood, etc., and ensure that there is no residue and no harm. In addition to metal descaling, it is also used for paper de-inking, ceramics removing stone deposit film, and stone artifacts removing grease and deposit film.   The traditional method of protecting artwork is to use mechanical and chemical methods, but with this method, it is difficult to control the process; the mechanical method may remove the artwork's own material, while the chemical agents may penetrate into the artwork and destroy the artwork's pigmentation. Both methods may cause irreparable damage to the artwork.   In the world's cultural heritage sites, laser cleaning technology has been applied to the Xia, Shang, and Zhou bronzes, statues of the ancient Greek era, BC ancient parchment scrolls, m...

Laser Composite Cleaning Principle

Image
 The laser  composite cleaning principle is mainly through the semiconductor continuous laser as a heat conduction output, so that the attachment to be cleaned to absorb energy to produce gasification, plasma cloud, and the formation of thermal expansion pressure between the metal material and the attachment, reducing the interlayer bonding force between the two. When the pulsed laser outputs a high-energy pulsed laser beam, the vibration shock wave generated will make the adhesives with weak bonding force directly detach from the metal surface, thus realizing rapid laser cleaning. The applications of this technology cover ships, automobile repair, rubber molds, high-end machine tools, railroads, and environmental protection. Resins, paints, oils, stains, dirt, rust, coatings, plating, and oxidized layers can be removed. The advantages of laser composite cleaning technology are not only the superposition of two lasers, focusing on the utilization of energy is far greater than ...

The relationship between the laser output light, beam expander, galvanometer and field lens in laser marking machine

  On the relationship between the four, many people can not, including a part of the equipment company engineers, many are waiting until the equipment problems to ask me, and customers to explain the relationship between the four a few hundred times, I think I need to spend a little time writing these out, and later when you ask, I will send this article directly to everyone. 1.  L aser outgoing light (Output beam diameter), this should be good to understand, it is from the laser output spot how big. This beam is generally collimated light, note that I said collimated light, not that parallel light, many people think that the light from the laser is parallel light. We often say that the laser's outgoing beam is a few millimeters, let's say the coherent CO2 C30A laser's outgoing light is generally 1.8 ± 0.2mm, and pulsed fiber laser outgoing light is generally 7mm, these are said to be the size of the laser's outgoing light. The continuous fiber laser out of the light is...

UK Welding Institute to carry out comparative handheld laser and arc welding tests

Image
  Recently, the UK-based Welding Institute (TWI) is planning to launch a joint welding industry project that will benchmark handheld laser welding against existing manual arc welding processes. Specifically, the project will examine the quality, productivity, cost, health, and safety aspects of handheld laser welding, covering a wide range of materials and joint configurations.   Today, there is a growing interest in handheld laser welding applications in the welding industry. In recent years, suppliers such as IPG Photonics , Oree, Lightwise Laser, and New Day Laser have introduced compact, handheld laser welding systems with power ratings up to 3kW. These laser welding systems offer a number of advantages: low operating costs; minimal setup requirements; ease of use; efficient, fast, and flexible processing in challenging space environments; minimal consumables and post-processing requirements; and, most importantly, high-quality welds in similar and dissimilar materials of...