Positioning and fixing method for temperature measuring thermocouple inside sand casting mold

A temperature-measuring thermocouple and fixing method technology, applied in the direction of casting molding equipment, casting molds, casting mold components, etc., can solve the problems of thermocouple positioning failure, clay sand blocks are easy to break, etc., and achieve the controllable temperature measuring point position, The effects of small heat transfer effects and simple processing methods

Active Publication Date: 2019-08-16
TSINGHUA UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method is more feasible for sand molds with curing effect, but it is not suitable for sand mold materials such as clay sand molds that need to be formed by manual compaction, because after the sand blocks are placed, the clay sand blocks are easily broken during the subsequent manual compaction process , resulting in failure of the positioning of the thermocouple

Method used

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  • Positioning and fixing method for temperature measuring thermocouple inside sand casting mold
  • Positioning and fixing method for temperature measuring thermocouple inside sand casting mold
  • Positioning and fixing method for temperature measuring thermocouple inside sand casting mold

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Embodiment

[0051] Such as figure 1 As shown, the specific operation steps of the positioning and fixing method of the sand material with its own solidification and forming characteristics:

[0052] 1. Prepare resin sand materials, casting molds and sand block wooden molds. The casting molds have the same shape and size as the castings. The shape is plate-shaped, and the length, width and height are 100mm, 100mm, and 30mm respectively.

[0053] 2. Place the lower mold of the sand block wooden mold on the horizontal table, pass the three thermocouples that need to be arranged in the sand mold and one thermocouple (both with a diameter of 1mm) arranged in the casting through the penetrating hole with a depth of 1.5mm The positioning straight groove is fixed in the lower mold of the wooden mold, and the length of the positioning blind groove used to fix the temperature measurement point of the thermocouple placed in the sand mold is 1mm, such as image 3 As shown, the distances from the tem...

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Abstract

The invention discloses a positioning and fixing method for a temperature measuring thermocouple inside a sand mold casting mold. A positioning and fixing method of a sand mold material with the self-solidification forming characteristic comprises the following steps a wooden mold is used and a sand block modeling mode is adopted for realizing positioning and fixing of the thermocouple, in the overall molding process of the sand mold, a sand block with the fixed thermocouple is fixed in the whole sand mold, the thermocouple is connected with multi-channel temperature acquisition equipment, molten metal is poured in the sand mold, and the temperature at the specified positions in a casting and the sand mold in the casting process are measured. A positioning and fixing method of a sand moldmaterial without the self-solidification forming characteristic comprises the following steps that positioning and fixing of the thermocouple are realized through a metal sheet with holes, in the overall molding process of the sand mold, the metal sheet with the fixed thermocouple is placed in the sand mold, the thermocouple is connected with the multi-channel temperature acquisition equipment, the molten metal is poured in the sand mold, and the temperature at the specified positions in a casting and the sand mold in a solidification process are measured.

Description

technical field [0001] The invention belongs to the field of metal casting forming technology, in particular to a positioning and fixing method for a temperature measuring thermocouple inside a sand casting mold. Background technique [0002] There are many methods for determining the heat transfer coefficient of the casting and the mold interface, and the inverse method is widely used at present. One of the application principles is to assume that the heat flow at the heat exchange interface between the casting and the mold is constant for a period of time, calculate the temperature field in the casting or mold during this period, and then calculate the temperature field in the casting or mold according to the measured temperature at certain points in the casting or mold. The temperature curve, iteratively correct the interface heat flow, and then solve the interface heat transfer coefficient between the casting and the mold. To obtain the temperature curve of certain posi...

Claims

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Application Information

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IPC IPC(8): B22D2/00B22C9/02
CPCB22C9/02B22D2/00
Inventor 韩志强王旭阳赵雪婷刘佳豪张天向
Owner TSINGHUA UNIV
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