What is the price difference between imported and domestic p

2019-01-29 15:53 Source:未知 Writer: admin


What is the price difference between imported and domestic products?
Date: 2019/1/25
Source: China Grinding Magazine
Saite Grinding Material (Shanghai) Co., Ltd. Yu Lu/Wen
In the grinding industry, when we mention imported products, our first reaction is often high price and good performance, but with the improvement of domestic production equipment and technology in the past two years, the reaction to imported products is only high price. In some areas, it is even generally felt that the performance of imported products has been at a disadvantage.
At present, the phenomenon of high price of imported products in the market is the result of pure brand premium, or is it reflected by the difference between imported products and domestic competitors?
The author will share with you as accurately as possible in this article. If there are any inaccuracies, you are also welcome to correct them.
The following contents will be separately elaborated according to the different situations of consolidated abrasives (resin cutting/abrasive discs) and coated abrasives.
Bonded Abrasives
This paper mainly talks about resin cutting/grinding. We look at the cost issue from the perspective of performance concerns. In practical applications, the following aspects will be taken as performance considerations:
Cutting force
- Service life
Safety (whether medium explosive will be used)
In China, manufacturers usually optimize the products according to the specific application and evaluation conditions, the most representative of which is 100 mm x 1 mm stainless steel ultra-thin cutting piece. We take this example to see its actual cost in the field of consolidation abrasives.
For stainless steel cutting applications of 100mm x 1mm ultra-thin cutting slices, the current main consideration standard is nothing more than the three points mentioned above.
Let's first focus on the contradiction between cutting force and service life. In the abrasive industry, the higher the cutting speed, the shorter the service life. In such applications, there are two basic design principles: 1. to extend the service life as long as possible under the condition of ensuring a certain cutting rate; 2. to maximize the cutting rate. This also corresponds to the immediate needs of downstream terminal customers: 1. Under the condition of abundant capacity, products with longer service life and lower production costs; 2. Under the condition of tight capacity, products with higher efficiency should be used as far as possible to improve production efficiency. Therefore, taking SAIT as an example, two products of 100x1mm and 100x0.8mm are prepared for this application to meet customer needs. It should be noted that the cutting rate of alumina abrasives is the fastest among the ordinary alumina abrasives. Of course, this is true in theory. In practice, due to the objective factors such as feed pressure, ambient temperature and material differences, the performance differences of products in these two aspects can not be accurately presented. Therefore, as a demand-oriented product, cutting force and service life are not enough to be the main reasons for price differences between products.
Let's look at safety again. Thanks to the rapid development of the industry in recent 10 years, it is difficult to see the problem of domestic ultra-thin cutting disc explosion in practical application. In addition, the insurance of various insurance companies, such safety can not really be called the reason for the price difference between Chinese and foreign products.
Since none of the above three points can be the reason for the price difference, is the price difference between Chinese and foreign products really just a brand premium? Let's take the ultra-thin cutting pieces corresponding to SAIT as an example and do some interpretation from other angles to see whether these premiums are reasonable.
Start with the OSA logo on the label. For SAIT, the OSA icon implies the following two points:
1. Every piece of product can meet the security of OSA standard. In addition to our concern about whether or not the blade is exploded in use, we have also completed two more stringent quality control: (1) under nominal rotational speed to meet the side edge of 150 Newton force of 100,000 knocks, the cutting blade does not break; (2) the limit speed of this size is not less than twice the nominal value. Intuitively speaking, the misuse of higher power machines by workers in actual operation will not cause explosive accidents and not cut vertically in actual use, but also can obtain additional security. Of course, we do not encourage the above erroneous usage habits and methods.
2. For each piece of stainless steel cutting products, the addition of iron, sulfur and chlorine elements is not more than 2%. Peers familiar with nuclear power, chemical and food industries may be familiar with, for safety reasons, in the special industry is required to add no more than 0.1% of the above three elements. Under the OSA standard, for safety and quality reasons, the addition of iron, sulphur and chlorine to stainless steel products is not more than 2%, almost the same reason - trachoma. In the special industry, trachoma may lead to leakage or pollution. In the common application of stainless steel, the existence of trachoma is easy to cause internal corrosion, which affects the use experience and life of the final product. Therefore, OSA has made clear provisions. So what does this 2% mean? The existence of iron, sulfur and chlorine not only helps to improve cutting force and prolong service life, but also can rapidly raise working temperature, so that the cutting piece can enter working state faster. Obviously, in the case that the performance of cutting pieces can not be enhanced by adding iron, sulfur and chlorine elements, the manufacturer needs to adjust the proportion of the formula, that is, by adding other more expensive raw materials, to make such products as far as possible to maintain normal performance.
It can be seen that only one OSA icon has brought about a significant cost increase for a single product.
At the application level,

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