Infrared temperature detecting device and method for wire material plasma arc additive manufacturing

An infrared temperature, plasma arc technology, applied in plasma welding equipment, manufacturing tools, arc welding equipment, etc., can solve the problems of destroying the workpiece to be welded, unable to apply, unable to control the grain size, etc., to improve the forming quality and dimensional accuracy. , the uniformity of tissue properties and the effect of improving stability

Inactive Publication Date: 2017-12-05
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, there are few related technologies related to the detection and control of the arc additive manufacturing process. The patent "GMA additive manufacturing dual passive visual sensor detection device and its detection method" (application number: 201510282713.6) discloses a method for GMA additive manufacturing. The visual sensing detection device and its detection method in the process control the forming size through visual sensing detection, but it cannot control the grain size of each deposited layer to be similar, nor can it guarantee the unifo...

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  • Infrared temperature detecting device and method for wire material plasma arc additive manufacturing
  • Infrared temperature detecting device and method for wire material plasma arc additive manufacturing

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Embodiment 1

[0030] The present invention provides a detection method for detecting temperature of an infrared temperature sensing device manufactured by using the above-mentioned plasma arc additive manufacturing, and the specific implementation steps are as follows:

[0031] Step 1: After a deposition layer is completed, the infrared temperature sensor moves to the interlayer temperature measurement position. The plasma welding torch, temperature sensor and deposition layer are located on the same vertical plane, and the welding torch is located directly above the starting point of the deposition layer. The distance from the starting point L 1 is 80mm, the angle between the temperature sensor and the horizontal direction is 45°, and the distance L from the starting point of the lay-up layer 2 is 200mm, the robot executes the waiting command and starts temperature measurement;

[0032] Step 2: The infrared temperature sensor emits a laser positioning point to locate the starting point of...

Embodiment 2

[0038] The present invention provides a detection method for detecting temperature of an infrared temperature sensing device manufactured by using the above-mentioned plasma arc additive manufacturing, and the specific implementation steps are as follows:

[0039] Step 1. After one deposition layer is completed, the infrared temperature sensor moves to the interlayer temperature measurement position. The plasma welding torch, temperature sensor and deposition layer are located on the same vertical plane, and the welding torch is located directly above the starting point of the deposition layer. The distance from the starting point is L 1 is 100mm, the angle between the temperature sensor and the horizontal direction is 60°, and the distance L from the starting point of the current layup layer 2 is 180mm, the robot executes the waiting command and starts temperature measurement;

[0040] Step 2, the infrared temperature sensor emits a laser positioning point to locate the star...

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Abstract

The invention discloses an infrared temperature detecting device for wire material plasma arc additive manufacturing and a detecting method of the infrared temperature detecting device. The infrared temperature detecting device comprises a working platform, a base plate, a plasma welding gun, an infrared temperature sensor, a clamp of the infrared temperature sensor, a temperature collecting controller, a computer, a robot control cabinet and the like. According to the detecting method of the infrared temperature detecting device, a non-contact infrared temperature sensing mode is mainly adopted, the temperature of a starting point of a surfacing layer is collected, when the temperature is detected to be lower than a preset temperature value, the computer communicates with the robot control cabinet through the temperature collecting controller, and a next pass of surfacing is conducted. In this way, according to the infrared temperature detecting device for wire material plasma arc additive manufacturing and the detecting method of the infrared temperature detecting device, detecting for the temperatures between surfacing layers of carbon steel, stainless steel and titanium alloy wire material plasma arc additive manufacturing can be achieved; the arcing time of the surfacing layers is controlled; homogeneous temperature control over metal of the surfacing layers is achieved; and the problems that smelting and coating layers are over heated, and the metal grain size is not even are effectively avoided, so that a formed piece is even in structure property, and the forming size precision and quality of electric arc additive manufacturing are improved.

Description

technical field [0001] The invention belongs to the technical field of arc additive manufacturing, and mainly relates to an infrared temperature detection device and a detection method for wire material plasma arc (Plasma Arc Welding, PAW) additive manufacturing. Background technique [0002] Arc additive manufacturing technology is a layer-by-layer cladding principle that uses arcs provided by welding methods such as melting inert gas welding (MIG), tungsten inert gas welding (TIG) and plasma welding (PAW) as heat sources. , under the control of the program, through the addition of wire, the advanced digital manufacturing technology of gradually forming metal parts from line-surface-body according to the three-dimensional digital model, its essence is surfacing rapid prototyping. It has the characteristics of fast forming, high wire utilization rate, excellent workpiece performance, and can complete the one-time molding of complex workpieces and large-sized workpieces. It h...

Claims

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Application Information

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IPC IPC(8): B23K9/04B23K9/095B23K10/02
CPCB23K9/042B23K9/0956B23K10/027
Inventor 冯曰海张天齐王克鸿张德库黄俊周琦余进
Owner NANJING UNIV OF SCI & TECH
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