侯马Low carbon steel shots s280

About Our Low Carbon Steel Shots

Our chromium-molybdenum alloy low carbon steel shots were successfully produced in March 2009 following three years of unwavering dedication from our scientific and technical team after introducing and absorbing the research and technology outcomes of experts and professors at Shandong University and Shandong University of Technology. Amongst others, this product boasts minimal internal defects and a dense structure, ensuring high hardness and zero breakage. In addition to its uniform granularity and outstanding resilience, rapid and consistent cleaning of internal corners or intricately shaped products can be achieved without causing any damage to workpieces. All these features result in reduced processing time, improved efficiency, and decreased production costs. Thanks to its exceptional strength and toughness, along with robust impact resistance and an extended service life, it has been widely applied and acclaimed in diverse industries including pipeline corrosion prevention enterprises in the West-East Gas Transmission project, leaf spring manufacturing enterprises, crankshaft manufacturing enterprises, and shipbuilding enterprises. The consumption of it is approximately 50% less than that of standard steel shots, rewarding our users with reduced operational costs. The economic benefits stemming from increased work efficiency and reduced consumption through the use of it can yield cost reductions of over 50%.

Advantages of Our Low Carbon Steel Shots  
1. High hardness; 2. Non-breakage; 3. Long service life; 4. High cleaning efficiency; 5. No damage to workpieces; 6. Enhanced workpiece appearance post processing; 7. Strengthened metal surface 

Technical Indicators

Dimensions

Metallographic Structure Test Report

Experimental Results  
The microstructure of different alloy shots is as illustrated in Figure 2.  
Figure 2 (a) 200x optical micrograph of alloy shot 1; (b) 500x optical micrograph of alloy shot 1;  
(c) 200x optical micrograph of alloy shot 2; (d) 500x optical micrograph of alloy shot 2  
As illustrated in Figure 2(a)(b), there is a substantial variance in the microstructure between the edge and the core of alloy shot 1. The micrograph of the edge exhibits an overall dark appearance and a lamellar structure formed by shear, which is identified as lath martensite. Conversely, the micrograph of the core appears relatively bright. Under higher magnification, a significant amount of non-parallel needle-like structures can be observed, apart from the lath martensite. These needle-like structures appear dark under the microscope due to the large quantity of carbides inside. On this basis, it can be concluded that this structure is lower bainite. Therefore, microstructurally, the alloy shot consists of lath martensite at the edge and a combination of lath martensite and lower bainite at the core. Similar microstructural features are also found in alloy shot 2 (Figure 2(c)(d)). However, in alloy shot 2, the lower bainite appears lamellar in shape and contains fewer carbides inside, resulting in a brighter appearance under the microscope.  
The microhardness results of the observed alloy shots at the edge and the core using a microhardness tester are presented in Table 2. 

Comparison of Technical Data of Low Carbon Steel Shots and Standard Steel Shots 

Based on the above data and practical usage, the following conclusions are drawn: 
The standard steel shot exhibits lower hardness and inadequate metallographic structure, and consequently has high breakage rates, slow cleaning speeds, and high consumption during usage. When tested with an Irving fatigue life machine, it demonstrated a cycle life of approximately 2,600 cycles at S460. 
The low carbon alloy shot, with high hardness (which can be properly lowered) and the addition of trace elements such as chromium and molybdenum, ensures a dense metallographic structure with minimal internal defects. Its exceptional strength, toughness, and resilience ensures good resistance to breakage, impact, and an extended cycle life during usage. In addition to the reduced cleaning time, it also helps our users enhance efficiency, and lower costs. Tested with an Irving fatigue life machine, it exhibits a cycle life of approximately 4,800 cycles at S460. Comparatively, the consumption of it is reduced by around 50% compared with standard steel shot. Particularly, it showcases a better surface strengthening effect on high-hardness workpieces (such as crankshafts, gears, and leaf springs). 
Overall, our low carbon steel shots boast a fatigue life 1.84 times longer than that of standard steel shots. Practical applications have indicated that our steel shots have higher hardness (HRC 48), compared with standard steel shots (around 40 HRC) (steel shots at HRC 42 or higher tend to be too brittle and less durable). Therefore, the higher hardness of our steel slots ensures faster cleaning speeds and time savings. The tasks of an 8-hour workday can be completed in just 6 hours. If your company's entire shot blasting system operates under an electrical load of 800 kW, 1,600 kWh per day, and 48,000 kWh per month can be saved, representing a monthly decrease of electricity costs by about CNY 40,000. If a ton of standard steel shots and low carbon steel shots costs CNY 4,800 and CNY 6,000 respectively, and assuming your company consumes 50 tons per month, the cost for standard steel shots would be 50 * CNY 4,800 = CNY 240,000, while for low carbon steel shots, it would be 50 / 1.84 * CNY 6,000 = CNY 160,040. This means a monthly saving of CNY 76,960 on shot costs, in addition to the CNY 40,000 saved on electricity costs, totaling a monthly saving of CNY 116,960 and an annual saving of approximately CNY 1.4 million. Additionally, our low carbon steel shots do not break, and is more environmentally friendly due to reduced dust. Therefore, they significantly reduce labor intensity, enhance worker efficiency, and improve products’ surface finish and overall quality.