Laser welding method of noble metal spark plug electrode
A technology of laser welding and precious metals, applied in laser welding equipment, welding equipment, metal processing equipment, etc., can solve problems such as difficult, complicated process, and affect the overall quality of welding, and achieve the effect of small thermal deformation and small spot
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[0010] The present invention will be further described below in conjunction with the drawings and embodiments.
[0011] Attached figure 1 It is a schematic diagram of the center pole structure of a platinum iridium spark plug. The appearance and structure changes of the center electrode and the side electrode of the spark plug can be seen from the attached drawings. Generally, the material of the center electrode 1 and the side electrode 2 of ordinary spark plugs is nickel, and its melting point is more than 1400 degrees. To ensure the service life of the product, the diameter of the center electrode of the ordinary spark plug for automobiles is Φ2.54mm, and the width of the side electrode is 2.6 mm above, that is, the diameter of the jumping surface is Φ2.54mm. The center electrode 1 and side electrode 2 of the platinum-iridium spark plug are made of noble metal materials with a higher melting point than the original nickel material (the melting point of platinum is more than 17...
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