Preset laser cladding shielding gas filling device

A laser cladding and shielding gas technology, which is applied in the field of preset laser cladding shielding gas filling devices, can solve the problems of powder splashing and powder waste, and achieve the effects of reducing waste, simple structure and reasonable design

Active Publication Date: 2018-12-07
FUJIAN UNIV OF TECH
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  • Application Information

AI Technical Summary

Problems solved by technology

And in this process, argon only plays the role of protection, not the role of powder delivery
[0005] Usually, both the synchronous method and the preset method are tested on the same machine, which leads to a problem, that is, during the preset cladding, the shielding gas is still sprayed from the powder feeding nozzle and meets the laser beam on the substrate. At this time, the protective gas does not play the role of conveying powder, and it is easy to blow off the pre-coating that has been preset and bonded to the substrate, resulting in random splashing of powder during preset and waste of powder

Method used

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  • Preset laser cladding shielding gas filling device
  • Preset laser cladding shielding gas filling device
  • Preset laser cladding shielding gas filling device

Examples

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Embodiment Construction

[0023] refer to figure 1 , figure 2 and image 3 , a preset laser cladding protective gas filling device, including a clamping nozzle 1, and a circular gas cover 2, the first sensor 3, the second sensor 4 and the third sensor 5.

[0024] The clamping nozzle 1 has a central sleeve 11 and two radial air pipes, that is, the upper air pipe 12 and the lower air pipe 13. The upper air pipe 12 has horizontal air outlet holes 14 on both sides, and the upper air pipe 13 has an upward air outlet 15. . Further, four to ten upper-layer air pipes 12 and lower-layer air pipes 13 are arranged on the clamping nozzle 1, and the upper and lower-layer air pipes 12, 13 are projected to overlap, so that the upward air outlet 15 of the lower-layer air pipe can blow against the bottom of the upper-layer air pipe 12 to protect The gas diffuses left and right, mixes evenly with the airflow blown out from the horizontal air outlet hole 14 of the upper trachea, and sinks in a diffusive manner, exhau...

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Abstract

The invention relates to a preset laser cladding shielding gas filling device which comprises a clamping nozzle. The clamping nozzle is provided with a central sleeve and two layers of radial gas pipes, horizontal gas outlet holes are formed in the two sides of the upper layer of gas pipe, and an ascending gas outlet hole is formed in the upper part of the lower layer of gas pipe. The upper layerof gas pipe and the lower layer of gas pipe are circumferentially divided into areas and are connected with a shielding gas tank through area pipelines and electric flow valves. The clamping nozzle isfixedly locked on a cantilever or a support of a laser cladding head through the central sleeve and can move along with the laser cladding head, and the projection of the clamping nozzle always covers a cladding operation area. Based on an argon gas characteristic and a cladding principle used during preset cladding, the preset laser cladding shielding gas filling device improves the delivery path of shielding gas. By adopting the following type clamping nozzle, the preset laser cladding shielding gas filling device can uniformly and gently diffuse and sink the shielding gas to the whole operation area, thereby avoiding directly blowing powder.

Description

Technical field: [0001] The invention belongs to the technical field, in particular to a preset laser cladding protective gas filling device. Background technique: [0002] Laser cladding principle: Laser cladding uses high-energy-density laser beams to rapidly fuse the added cladding material with the substrate, thereby improving the surface properties of the substrate. According to the different ways of adding materials, it is divided into two types: preset method and synchronous powder feeding method. [0003] Synchronous powder feeding method: At the beginning of the test, the laser emits laser light, so that the laser spot is irradiated on the substrate; the protective gas tank delivers the protective gas to the powder feeder, and the powder is sent to the powder feeding nozzle, and the gas and powder are sprayed from the powder feeding nozzle to the substrate together On the other hand, the laser spot converges on the substrate to realize the coaxiality of powder, lig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10
CPCC23C24/10Y02P10/25
Inventor 许明三戴腾运王涛曾寿金叶建华
Owner FUJIAN UNIV OF TECH
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