Processing method of gear steel oxygen content detection sample
A technology for detecting samples and processing methods, applied in the field of metallurgical manufacturing, can solve problems such as poor accuracy, residual cleaning agent, rough surface of samples, etc., to achieve the effect of easy operation, guaranteed stability, and improved accuracy
Pending Publication Date: 2022-03-01
SHANDONG IRON & STEEL CO LTD
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Problems solved by technology
The surface of the sample obtained by the existing method is rough, and cleaning agent residues are easy to remain after cleaning, resulting in unstable analysis results and poor accuracy
Method used
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Embodiment 1
[0023] Take 20CrmntiH gear steel for production of φ70 mm as an example, the gear steel oxygen content detection sample treatment method, including the following steps:
[0024] (1) First of all, one end of the φ5mm gear of the vehicle is fixed to the drilling machine, open the drilling machine, the rotational speed of the drilling machine is 450 rpm, and the surface of the gear steel rod is uniformly grinded by 120 mesh resin wear-resistant sandpaper. 3.5min;
[0025] (2) EtOAc Ethanol Cooling Step (1) is used to complete the polished gear steel rod 30s by ethanol content ≥99.7%.
[0026] (3) Gear steel rods after the cooling of the cooled gear steel rod were obtained by 400 mesh gold photographic sandpaper.
[0027] (4) The gear steel rod after step (3) is polished by 800 mesh gold photographic paper;
[0028] (5) The gear steel rod is ground after the polishing cloth of the gang phase polishing agent after the step (4) is polished.
[0029] (6) Remove step (5) to remove the pol...
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Abstract
The invention belongs to the technical field of metallurgical manufacturing, and particularly relates to a processing method of a gear steel oxygen content detection sample. The processing method of the gear steel oxygen content detection sample comprises the following steps: (1) grinding a gear steel rod sample by using 120-mesh abrasive paper; (2) cooling the gear steel bar sample by adopting absolute ethyl alcohol; (3) carrying out polishing by adopting 400-mesh metallographic abrasive paper; (4) 800-mesh metallographic abrasive paper is adopted for polishing; (5) the gear steel bar sample is polished through polishing cloth; (6) cutting a sample of 0.5-1g from the middle part, and cleaning the sample in absolute ethyl alcohol; and (7) taking out the sample, blow-drying, weighing and analyzing. The processing method is rapid and efficient, is beneficial to the accuracy and reliability of detection results, and is suitable for the requirements of large-batch gear steel production inspection.
Description
Technical field [0001] The present invention is a technical field of metallurgical manufacturing, and in particular, a method of treating a gear steel oxygen content detection sample. Background technique [0002] In recent years, with the rapid development of my country's automotive industry, the demand for automotive gear steel has increased, and the service life requirements are also increasingly used. Steel oxygen content is an important factor affecting the fatigue life of gear steel, and the fatigue life of hypoxic content is significantly higher than the high oxygen content steel. In the previous mention, the determination of oxygen content in gear steel is critical. Since the gear steel in the gear steel is generally 10 -6 Level, and the precision and accuracy of the oxygen content in the steel sample have an extremely important relationship with the treatment of the surface of the measurement. The current conventional method is to secure one end of the rod to a 1500-2400...
Claims
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IPC IPC(8): G01N1/28G01N1/32
CPCG01N1/286G01N1/32G01N2001/2866
Inventor 石军强石欣钰陈良李飞李浩秋王宗斌王允尹崇丽
Owner SHANDONG IRON & STEEL CO LTD