SparkCCD7000 Spark Direct-Reading Spectrometer for Element Analysis of Small Automotive Parts

By applying the SparkCCD7000 Spark Direct-Reading Spectrometer combined with a Φ4mm boron nitride gasket, we achieve the accurate and rapid determination of multiple elements in carbon steel and stainless steel small auto parts. The data meets the relevant provisions on data precision in international and national standards, and fully meets the testing requirements for small-sized metal parts of carbon steel and stainless steel.

The SparkCCD7000 Spark Direct Reading Spectrometer adopts a high-resolution linear CCD as the detector to realize full-spectrum scanning, which can be widely applied to the full-element composition analysis of various matrix metal samples. Its volume is only one-third that of traditional spark spectrometers equipped with photomultiplier tubes as detectors, and it enables the on-site addition of analytical elements or new matrices without any hardware upgrade. Its excitation light source is a fully digital light source with continuously adjustable excitation energy and frequency, which can accurately detect the chemical composition of multiple elements in carbon steel and stainless steel materials at the same time. The instrument is suitable for different materials and is widely used in production process control and finished product detection in central laboratories in non-ferrous metals, metallurgy, casting, machinery, metal processing and other fields.

Sample Preparation and Experimental Conditions

Laboratory environment: temperature 23.2℃, relative humidity: 32%

Argon gas: high-purity argon (purity ≥99.999%), flow rate 9L/min

Sample preparation equipment: file or sandpaper, grit 240 mesh; sandpaper grinding disc, grit 40 mesh

The sample is treated with a file or sandpaper to remove surface oxides or other impurities, and then the surface is cleaned with a dust-free cloth combined with absolute ethanol to make the sample surface flat and clean, meeting the requirements of spectral analysis.

Table 1: Typical Instrument Analysis Parameter Settings

Argon gas pressure	0.5MPa
Pre-ignition Frequency	500Hz
Integration Frequency	500Hz

Curve Type

We can customize calibration curves suitable for different analytical materials according to user needs, and ensure the accuracy of analytical results through matrix correction and third-element interference correction. Users only need to standardize the curve with the drift correction sample attached to the instrument to analyze most unknown samples. Type calibration is also required for analyzing some unknown samples to eliminate the impact caused by large differences in metallurgical processes, internal structure, physical state, etc., between the standard samples used for drawing the working curve and the customer's actual samples. Standard samples with chemical compositions closely matching those of the customer's actual samples are selected for type calibration, enabling accurate subsequent analysis.

Typical Application Cases

Figure 2 Small Automotive Part Samples Produced by the Customer

I. Carbon Steel Samples

The following are the repeatability test data of carbon steel bolt samples produced; see Tables 2 and 3 for details.

Table 2 Repeatability Data of Carbon Steel Bolt Samples

Table 3 Repeatability Data of Carbon Steel Bolt Samples (Continued)

The following are the accuracy test data of carbon steel standard samples; see Table 4 for details.

Table 4 Accuracy Data of Carbon Steel Standard Sample JZK13-221

II. Stainless Steel Samples

The following are the repeatability test data of stainless steel retaining ring samples produced by the customer; see Tables 5 and 6 for details.

Table 5 Repeatability Data of Stainless Steel Retaining Ring Samples

Table 6 Repeatability Data of Stainless Steel Retaining Ring Samples (Continued)

The following are the repeatability test data of stainless steel acorn nut samples produced by the customer; see Tables 9 and 10 for details.

Table 9 Repeatability Data of Stainless Steel Acorn Nut Samples

Table 10 Repeatability Data of Stainless Steel Acorn Nut Samples (Continued)

The following are the accuracy test data of stainless steel standard samples, see Tables 11 and 12 for details.

Table 11 Accuracy Data of Stainless Steel Standard Sample YSBS11379a-2008

Table 12 Accuracy Data of Stainless Steel Standard Sample YSBS11379a-2008 (Continued)

It can be seen from the above experimental data that the SparkCCD7000 Spark Direct-Reading Spectrometer delivers excellent performance. Combined with a Φ4 mm boron nitride gasket during testing, it can accurately and rapidly analyze small-sized carbon steel and stainless steel samples. The data are stable and reliable, and the precision meets the specified standard requirements, thus meeting customers' application requirements. At present, this instrument has been widely used for raw material inspection, part analysis and product process R&D in non-ferrous metallurgy, automobile manufacturing, aerospace, shipbuilding, mechanical and electrical equipment, construction machinery, electronic and electrical engineering, education, scientific research and other fields.