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Several Advantages Of EDM Machining

  •  1. Two types of side repair procedures are designed for the EDM machine. The flat-bottomed side repair procedure is used for the acute-angled rectangle, and the flat-bottomed round side repair procedure is used for the round or multi-curved ellipse. When measuring and repairing, the electrode will move to the workpiece at a specific angle, from top to bottom, from the inside out, and there is also CNC automatic control, which also becomes a three-axis linkage. The operation mode is not easy to deposit carbon, easy to remove chips and exhaust gas, does not cause arcing, and has high production efficiency.
  • 2. The X-axis transverse machining of the EDM machine tool has higher mold closing accuracy and higher productivity than the Z-axis downward machining.
  • 3. Special control is added to the control circuit CNC electric spark machine to generate the false arc or short circuit. When the pulse immediately cuts off the power supply, the energy supply to the cavity shape will be stopped, and the electrode temperature will not continue to rise, reducing the possibility of fire. .
  • 4. The spark machining adopts the full low voltage pulse method after high voltage breakdown, and the pulse width is equal. Practice has proved that this pulse mode further reduces the tool electrode loss, the machining surface is rough and uniform, and the tool electrode end surface loss is small.
  • 5. The EDM machine tool can use one electrode for rough machining, saving the time and cost of double-electrode machining, eliminating the trouble of electrode calibration, and shortening the machining time of the mold.
  • 6. The self-adaptive function, the so-called self-adaptive knife lift, is when the discharge is greater than the discharge, the erosion in the cavity is greater than the discharge stability, and the balance is destroyed. At this time, the spark machine automatically carries the knife and uses the working fluid to pump out Excessive etching, when the balance or discharge is greater than production, stop lifting the knife, which improves efficiency.

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What Is PTJ?
PTJ adopts flexible manufacturing methods to help our customers to control the product cost but best quality guranteed. Some frequently used machining processes include CNC milling, CNC turning, precision grinding, EDM machining, laser cutting, welding, CNC punching, sheet metal stamping, profile extrusion, die casting, forging, and more. Most of the custom precision cnc machining china parts and plastic machining components we made are related to automation machines, robotics, medical devices, fiber optics, aerospace/aircraft, test and measurement, sensors, telecom components, scientific devices, audio equipments, bicycles, boats, camera, cars, drones, electronic enclosures, front panels, furniture and architecture hardware, lighting, motorcycles, scooters, utv, jeeps, trucks, sports equipments, machinery, music instruments, and so on.
For Surface Finishes
Thanks to our mature supplier management and continuously experience accumulation. Now we have very stable surface finish suppliers to assist us to do different surface finishes with stable and excellent quality. Some Frequently used surface finishes are Anodizing, Oxide, Nickel Plating, Chrome Plating, Gold / Silver Plating, Powder Coating, Zinc Plating, PVD Coating, Passivation, Heat Treatment, Electrochemical machining, Brushing, Polishing, Sandblasting, etc.
General Tolerance of Equipments
1. CNC Milling tolerance: +/-0.01mm
2. CNC turning tolerance: +/-0.01mm
3. Precision grinding tolerance: +/-0.005mm
4. EDM machining tolerance: +/-0.005mm
How to Control Quality?
1. Inspection by machinist himself who is responsible for a specific part machining.
2. First article part inspection by QA.
3. IPQC patrol inspection during production.
4. PQC inspection before shipping according to ISO9001 sampling inspection standard for large quantity production. And for small quantity, 100% full inspection.
5. Material Certificates and outgoing inspection reports could be provided.
Our CNC machine and swiss machining shop sets full and advanced inspection instruments such as CMM, projector, height instrument, industrial microscope, micrometer, calipers, thread gauges, pin gauges, block gauges, etc. so as to inspect all details on drawings and confirm quality is good and issue the ourgoing reports accordingly.
How to Start Working with Our Company?
1) Sending detailed RFQ with 2D and 3D drawings to through email to info@pintejin.com. General drawing formats like PDF/ STEP/IGES/X_T etc are accepted.
2) We check and confirm about materials, surface finish and quantiy, and evaluate. If any question, our sales engineer would double check with customers until everything is clear. We will quote accordingly if we are ok to make the parts with best quality. If no question and everything is clear, we send quotation with best prices within 24 hours. Our sales engineer team is online for 7/24 for offering customers the best cnc machining services.
3) We recommend to start from few pcs prototypes for approval at the beginning. If nothing wrong after customer’s test and approval, then we proceed to volume cnc manufacturing.
Some Tips for Customers
a. We accept Paypal payment of small amount payment for samples or small batch orders for building mutual trust at the beginning. General payment terms is 30% by wire transfer, and balance before shipping.
b. Delivery time for few pcs samples are generally 5 to 7 days, and 15 to 25 days for volume production. If the order quantity was too big, we would check and confirm delivery time sepertely.
c. Our company has concrete promise to all customers that if any quality problem caused by our factory, we would remake all parts for free or send money back.
Safe Packing Methods to Prevent Goods from Damage during Transportation
Due to long distance transportation to overseas countries, safe and strong packing is very important to gurantee the parts to be in good conditions when arriving at customer’s hand. We choose different packing materials according to different parts and quantity. Some commonly used packing materials are pp/bubble bag, oil paper, foam, blister tray, 5 layer carton, wood box, etc. See below some packing pictures.