The headline of CCTV News Broadcast aired "What the Internet Thinking Brings". Taking Haier Air Conditioning as an example to illustrate the new changes brought about by the Internet to the manufacturing industry, Haier Air-Conditioning demonstrated how Haier has attracted global R&D forces through its own global R&D resource integration platform. Accelerate product R&D speed.
Looking at the entire manufacturing industry, not only Haier, the United States has embarked on the “industrial Internet†journey early and integrated the industrial system with the Internet, trying to reconstruct the global industrial structure... It can be seen that traditional industrial companies survive the market competition with the help of the Internet. And development is a general trend.
Why does the manufacturing industry have to embrace the Internet? One thing that cannot be avoided is that the Internet has continued to change the pattern of production organization in human society. The contribution of the Internet itself will not be too big, but the contribution it brings is incalculable. It is not difficult to understand that the Internet has been and is reducing our communication costs, and globalization has a profound impact on our production costs. The result of the addition of two forces is to make individualized production and service for individual consumers possible. This kind of personalized production and service is usually sacrificed due to cost issues in the early production operations. Whether it is the first industrial revolution led by the steam engine or the second industrial revolution dominated by electricity, the industrial revolution in human society has been pursuing higher efficiency in large-scale production with weaker differences and enhanced homogeneity. This homogenized production reached its climax in Ford's streamlined operation, and it derived the 'legitimate vocabulary' as 'any colour is OK as long as it is black'.
In other words, the transformation of the manufacturing industry through the use of the Internet of Things is essentially a fundamental customer-oriented operating mechanism. The customization of durable goods manufacturers is achieved through flexible production based on customer data. Arrow shirt has a very successful attempt as early as the 1980s; FMCG manufacturers should be differentiated according to market segments, or they must Based on customer data. With sufficient customer data support, it is possible to shift from relying on channel marketing to targeted smart push and interaction to minimize manufacturing and logistics costs. Therefore, the Internet is realizing immediate feedback on application data of consumer products, and the construction of such data systems is of great significance for traditional manufacturing improvement and innovative products.
In automation industry, Rockwell Automation followed the situation and launched the concept of "connected enterprise". The so-called "connected enterprise" means integrated automation, control and information technology, combined with modern technologies such as the most advanced mobile technology, cloud technology, and big data analysis in the "Internet of things" era to realize seamless connection of data, production processes, personnel, and equipment. . This concept not only includes all the latest technological elements, but also indicates the future direction of manufacturing.
How can the enormous value of commercial interconnection be realized in industrial interconnection? How can industrial interconnection drive the traditional manufacturing industry into a new era of interconnection with all things? Mr. John Watts, Rockwell Automation’s Asia Pacific Marketing Director, said: “The realization of everything in the factory manufacturing industry The precondition for this is that the network must use a standard, open and unmodified industrial Ethernet network so that smart devices, mobile devices, and cloud technologies can be connected together in order to easily realize the interconnection of all things. Rockwell Automation combines Rockwell's extensive experience in automation and manufacturing with Cisco's network experience in a strategic partnership with leading enterprise network provider Cisco to help manufacturing companies eliminate production The barrier of communication between the workshop and the company, using innovative technologies and products to connect all the data in the factory and other parts of the enterprise, effectively helping the industry to realize the interconnection of the company."
Rockwell Automation's “Connected Enterprise†solution can quickly introduce several new commercial technology technologies such as cloud computing, big data, and mobile internet into the traditional manufacturing industry. Mr. John Watts said: "After using standard Ethernet for connected companies, Rockwell Automation's 'connected enterprise' technology will collect data from all aspects of the manufacturing industry on top of cloud-like servers. In cloud services, These data, together with the corresponding application software, can turn big data into practical and useful information such as yield, quality records, asset health, and energy efficiency. This information can help manufacturing companies better judge and understand The current status of manufacturing plants can help companies do better work."
How to interpret such a huge amount of manufacturing data into useful information will be the most concerned issue for future-oriented manufacturers. Mr. John Watts said: "In addition to the need for a good infrastructure, big data interpretation requires a lot of analysis and mining techniques to find the information needed from big data. Now, Rockwell Automation has Software and solutions for interpreting big data, and interpretations, can be visualized on mobile devices to help decision makers effectively and timely understand the status quo of factories, understand the dynamics of the market, and help customers improve their manufacturing processes. Efficiency, improve collaboration between departments, and better solve problems.â€
However, the current domestic manufacturing industry's understanding of the integration of industrialization and informatization still stays at a relatively shallow level. It has not put the 'two integrations' at the strategic level to promote, and the continuous investment of information technology construction funds has not been sufficient. The integration of the Internet into traditional industries covers communications operators, Internet companies, and manufacturing companies. As all parties have difficulties in forming unified opinions on information interconnection and access technology standards, the integration process between the Internet and traditional industries has been slow. It is difficult to promote the deep integration of the Internet and traditional industries.
Tungsten Carbide Roller
Tungsten carbide roller has characteristics of good wear resistance, high temperature red hardness, thermal fatigue resistance and thermal conductivity and high strength , have been widely used in high-speed wire rod, bar, rebar, seamless steel tubes, etc. Domestic production of tungsten carbide roller materials mostly WC- Co, WC- Co- Ni- Cr two series, and the content of Co, Co- Ni - Cr is in the range of 6wt% ~ 30wt%. From the use of perspective, tungsten carbide rollers has good mechanical properties, its flexural strength up to 2200 MPa or more, shock toughness up (4 ~ 6) × 10^6 J/ m^2, Rockwell hardness (HRA) is up to 78 to 90, widely in the high-speed wire rod rolling process, which is much higher than single-slot chilled cast steel or high speed steel rolls.Tungsten carbide is made of Tungsten Carbide Powder and binder phase (such as drilling, nickel, etc.), and then pressing and sintering, regardless of the conditions under cold rolled or hot rolled has excellent wear resistance, tungsten carbide rollers has been widely used in pre-finishing mill and finishing of high-speed wire rod currently. On the performance of tungsten carbide roller in hot-rolling wire rod , the material must meet the following requirements:
1. Sufficient anti-fracture strength;
2. Good abrasion resistance;
3. The smooth surface finish;
4. Excellent corrosion resistance, thermal fatigue, thermal cracking performance.
Tungsten carbide roller rings can working in bad conditions , small profile rolling (especially rebar rolling) process conditions is harsher than the high-speed wire rod, and therefore corresponds to the profile rolling ,tungsten carbide rollers recommend using high binder phase carbide.
Tungsten carbide roller material design
Pre-finishing all vehicles roller should ensure its high toughness, strength, rigidity and thermal conductivity, followed before considering its wear resistance. When designing each vehicles roller, pre-finishing materials should choose carbide grades of Co, Co- Ni- Cr binder content is high (greater than or equal to 25wt%) , requiring an average WC grain size of coarse (5μm ~ 6μm), to obtain a higher shock toughness, proper strength and hardness. For the finishing of the roller movements, particularly the last two rollers of the finish rolling, which suffered load is small, and high relative velocity of the material to be pressed (80 m / min ~ 120 m / min). In this case, the wear resistance of the roller to be the most important requirements, and must ensure the strength , timpact toughness and hardness of a reasonable match, so the binder of Co / Ni content ratio and the average grain WC control of particle size and other factors must have greater control in front of different pre-finishing rolling roll.
Tungsten carbide roller category
According to the structure of tungsten carbide rollers, it can be divided into solid tungsten carbide roller and composite tungsten carbide roller. Solid tungsten carbide rollers have been widely used in pre-finishing and finishing stands high speed wire rod mill (including fixed reducing the rack, pinch roller rack). Composite tungsten carbide roller is made of cemented carbide and other materials, and it can be divided into tungsten carbide composite roll rings and solid tungsten carbide composite roller. Tungsten carbide composite roll rings mounted on the roller shaft; solid tungsten carbide composite roller will be directly cast in the roll axis to form a whole, a large load is applied to the rolling mill.
Tungsten carbide roller production process control
Tungsten carbide rollers produced by powder metallurgy method, the key to its process control is the chemical composition of the material and the mixture was prepared, pressed molding, sintering and deep processing and other preparation process parameters.
1. Preparation of starting material (WC focus quality): As the WC raw material and quality control of the use of different levels of quality may fluctuate, resulting in adverse effects on microstructure.
2. Preparation of the mixture: Mixture preparation is the key to the production process of the roller, the roller of failure modes - trachoma, mainly generated by this procedure.
3. Pressing: roller pressing is an important process of the roller mill.
4. Sintering: roller sintering is to determine the final quality of the roller production processes, use of advanced low-pressure sintering technology, HIP sintering technology can greatly improve the performance of roller.
5. Deep processing: deep processing rollers have a greater impact on the quality and accuracy of the roller surface.
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