Vertical-type foundry sand five-intensity testing device and foundry sand intensity acquiring method based on device

A testing device and casting mold technology, which is applied in the field of casting sand, can solve the problems of pollution tester and sand samples, easy leakage of hydraulic oil, and inaccurate testing results of sand strength, so as to improve test accuracy, overcome static friction and Manual loading is unstable and avoids the effect of easy pollution problems

Inactive Publication Date: 2014-06-25
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the problem that the manual loading process of the horizontal hydraulic molding sand strength tester is unstable, the hydraulic oil is easy to leak, the tester and the sand sample are polluted, and the testing result of the molding sand strength is inaccurate, Proposed a five-strength vertical testing device for foundry sand and a method for obtaining the strength of molding sand based on the device

Method used

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  • Vertical-type foundry sand five-intensity testing device and foundry sand intensity acquiring method based on device

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specific Embodiment approach 1

[0015] Specific implementation mode 1. Combination figure 1 Describe the specific embodiment, the foundry sand five-intensity vertical test device described in the specific embodiment includes a base 15, a lower pressure head seat 2, a lower pressure head 3, an upper pressure head seat 6, an upper pressure head 5, and a tension sensor 7. Loading force transmission plate 9, first guide rod 21, second guide rod 10, linear motor 11, top plate 16, baffle plate 22, left side plate 18, right side plate 17, vertical plate 19, fixed plate 20, all Said left side plate 18 and right side plate 17 are respectively fixed on the left and right sides of top plate 16, baffle plate 22 is fixed between left side plate 18 and right side plate 17 and is positioned at the below of top plate 16, and baffle plate 22 and top plate 16 Parallel to each other, one end of the first guide rod 21 and one end of the second guide rod 10 are vertically and symmetrically fixed on the lower surface of the top p...

specific Embodiment approach 2

[0016] Embodiment 2. The difference between this embodiment and the five-strength vertical testing device for foundry sand described in Embodiment 1 is that the tensile pressure sensor 7 has a range of 0-3000N and an accuracy of 0.1%.

specific Embodiment approach 3

[0017] Embodiment 3. The difference between this embodiment and the five-strength vertical testing device for foundry sand described in Embodiment 1 is that the thrust range of the linear motor 11 is 0-3000N, and the linear motion speed is 1mm / s.

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Abstract

The invention discloses a vertical-type foundry sand five-intensity testing device and a foundry sand intensity acquiring method based on the device, relates to the field of foundry sand, and aims to solve the problems that when the foundry sand intensity is tested by a horizontal-type hydraulic foundry sand intensity tester, the manual loading process is instable, hydraulic oil is likely to leak to pollute a tester and a foundry sand sample, and the foundry sand intensity testing result is inaccurate. A foundry sand sample is placed between an upper pressure head and a lower pressure head; a computer controls a linear motor to drive a loading force transmitting plate to drive the upper pressure head to apply pressure downward to the foundry sand sample by a communication module and an optoelectronic isolation digital module; a tension and pressure sensor monitors the variation of loading force on an upper pressure head seat in real time, and sends loading force data to the computer by a data acquisition module and the communication module; the computer calculates according to the loading force data to obtain the foundry sand intensity. The vertical-type foundry sand five-intensity testing device is suitable for testing on five intensities of foundry sand.

Description

technical field [0001] The invention relates to the field of foundry sand. Background technique [0002] The performance of casting sand directly affects the quality of the mold and the dimensional accuracy of the cavity, which in turn has an important impact on the quality of the casting. Therefore, the testing of the performance index of molding sand has always been concerned by foundry workers, and strength is one of the most important performance indexes of molding sand. At present, most of the molding sand strength indicators are tested by the traditional horizontal hydraulic molding sand strength tester. However, since the horizontal molding sand strength tester is loaded by manually shaking the runner to compress the hydraulic oil, and uses the hydraulic oil gauge to display the measurement results, it has the following disadvantages: during the test, the manual loading process is unstable, and the friction of the no-load process Large, resulting in poor repeatabili...

Claims

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Application Information

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IPC IPC(8): G01N3/08
Inventor 石德全高桂丽姜发同李大勇
Owner HARBIN UNIV OF SCI & TECH
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