Industry 4.0: A Primer OR Embracing Transformation and Rediscovering Growth

Industry 4.0, the fourth industrial revolution, has begun. Manufacturing industries are going through disruptive change through digital transformation and the use of exponential technologies. The concept has received a great deal of hype in recent years, yet remains an abstract idea for many businesses and entrepreneurs.

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What is Industry 4.0?

Over the past two and a half centuries, a series of industrial revolutions have transformed how manufacturers produce goods. They are namely,

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Just as these revolutions have forever changed how the world manufactures widgets, Industry 4.0 promises to have the same transformational impact.

While Industry 3.0 focused on the automation of individual processes and machines, Industry 4.0 focuses on the end-to-end digitization of all physical assets and their real-time integration into digital ecosystems with value chain partners.

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The seamless generation, extraction, and analysis of the resulting data underpin the efficiency gains promised by Industry 4.0. Specifically, it empowers businesses to understand better and control the various dimensions of their production and operation.

This insight allows businesses to leverage instant data insights to boost productivity, improve process efficiencies, and drive the business bottom line.

At its heart, Industry 4.0 leverages the inter-connectivity among a wide range of technologies to ultimately create value and offers a more comprehensive, interlinked, and holistic approach to manufacturing.


Technologies Driving Industry 4.0

Industry 4.0 is no longer a ‘future trend’ – for companies that are at the forefront of driving change and innovation; it is now at the heart of their strategic and research direction. The following seven technology trends often referred to as exponential technologies, form the building blocks of Industry 4.0.

 

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Big Data, Analytics & AI

Industry 4.0 generates an enormous amount of data. The extraction, processing and analysis of data from multiple sources (production equipment, processes, enterprise, and customer management systems) are becoming standard in generating insights, supporting real-time decision making and improving existing processes and business parameters.


Augmented Reality (AR) and Wearable Technology

Augmented-reality-based technologies can have a far-reaching impact on processes, including training and walkthroughs, part selection, and remote repair and troubleshooting capabilities.

Although these technologies are still in their infancy, companies are looking at a broader use of AR to provide workers with real-time information to improve decision making and minimize human performance errors.

Hence, reducing a lot of overhead costs associated with transportation and workforce management.


Internet of Things (IoT) and Smart Sensors

Field devices are being equipped with embedded computing, allowing them to communicate and interact both with one another and with centralized controllers. This move will also decentralize analytics and decision making, enabling real-time responses.

By monitoring, controlling, and orchestrating large amounts of different devices. IoT has many use cases, with asset management and tracking being one of its major applications. For example, IoT can be used in inventory management - to track and eventually prevent the overstocking or understocking of inventory.


Additive Manufacturing

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With Industry 4.0, additive-manufacturing methods, such as 3-D printing, are being widely adopted to produce small batches products that offer construction advantages, such as intricate, lightweight designs and will enable rapid prototyping, and greater individualization and customization.

Additionally, certain advances in the technology have even stretched its application in metal part manufacturing without the need for tooling.


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Cloud Computing

Cloud-based applications offer excellent opportunities to host, share, and run the analysis of the big data generated by Industry 4.0. At the same time, the performance of cloud technologies will only further improve with time and scalability, achieving reaction times that will be multiple folds better than local or traditional computing technologies. Cloud computing enables inter-connectivity and distribution not only between factories but also across the entire global value chain network.


Horizontal and Vertical Integration

With Industry 4.0, companies, departments, and their functions and capabilities will become much more cohesive, as cross-company, universal data-integration networks evolve and enable truly automated value chains.

Horizontal integration stretches well beyond just the internal operations from suppliers to customers and all the key-value chain partners. It now includes technologies from track and trace devices to real-time integrated task planning and execution. A system based, end-to-end real-time planning and horizontal integration and collaboration are now possible using cloud-based platforms.

Vertical integration includes that within a network of manufacturing sites, including digital engineering and real-time data integrated production planning. Horizontal and vertical integration is the glue that binds together the technology frontiers.


Cybersecurity

With the increased connectivity and more touchpoints where is data collected means that the need to protect critical production and safety systems from cybersecurity threats increases dramatically, and the role of cybersecurity for an organization’s business continuity becomes imperative.

Per a PwC study, business owners flagged concerns such as operational interruption and liability risks at the top of their list for data security concerns.


Industry 4.0: Success Stories

A BCG study on Industry 4.0 in Singapore, claims, that rapid adoption of Industry 4.0 could boost the country’s labor productivity by about 30%, create 22,000 new jobs with average salaries up to 50% higher compared to current, and add S$36B in total manufacturing output and revenues for companies including MNCs and local firms, all by 2024. However, this study does appear to state the ideal trajectory and somewhat over-optimistic; these success stories that demonstrate that the targets are within reach.

Rio Tinto, one of the world’s largest mining companies, were able to recover up to $2M in losses due to unexpected asset failures by installing 200 sensors that monitored every facet of their vehicle feet 24/7. By combining smart sensors with data analytics, there were able to proactively identify problematic trucks remotely and plan maintenance and productivity around their production schedule.

Japanese engineering and automobile OEM company, HIROTEC Corporation, had incurred up to $1.3M in costs due to unplanned downtime. They managed to deploy an on-premise IoT cloud platform with edge analytics, which they claim led to a “100% reduction in time to manually inspect production systems, enabling technicians to re-invest that time in tasks that drive more value to production workflows”.

GE Aviation is piloting Skylight on Glass combined with a WiFi-enabled torque wrench to optimally tighten bolts while performing routine assembly and mainten...

General Electric (GE) offers us a glimpse of how Augmented Reality can empower manufacturing quality control and human performance error minimization. Through its pilot program at its jet engine manufacturing facility in Cincinnati, OH, USA, GE implemented AR glasses for their workers. This program allowed the workers to view digitized work instruction without disruption of work activities as well as access to training videos or remote voice commands from subject matter experts.GE reported up to an 11% improvement in worker productivity as well as quality.

Conclusion

Industry 4.0 has ushered in a digital economy where technology is ubiquitous, driving transformative change in the way we live and radically disrupting every business sector.

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These new technologies might be exciting, but the real lingering challenge of Industry 4.0 is that the majority of companies are still not ready to use them.

Even as technological transformations continue apace and early adopters reap the benefits of the technologies that suit their business context, executives at most companies are still bewildered by the vast array of technologies and capabilities already available. It is difficult for these executives to see an obvious entry point as prevalent myths and misconceptions can cloud anybody’s judgment.

In our next article, we will cover some of the myths, challenges, strategies, and implementation of Industry 4.0 principles in your business.  

Difference between Type 303 and Type 304 stainless steel machining

Material selection is vital for cost-effective machining on Swiss-type lathes. How do most common stainless steel Type 304 and its modified version Type 303 alloy compare for machinability and other properties?

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To produce the top quality machined parts, we need to consider several different factors influencing the machining process. The consideration starts with

In this article, we focus on the details regarding the material selection for the machining job.

For a wide variety of machining applications, the stainless steel is a material of choice. Besides its advantageous mechanical and chemical properties, stainless steel comes in many different alloys that fit nearly any use.

Source: https://www.machinemfg.com/metal-cutting-difference/

Source: https://www.machinemfg.com/metal-cutting-difference/

We most commonly use the austenitic type of stainless steel alloys for machining parts on the Swiss-type lathes. Austenitic stainless steel contains chromium, nickel, and manganese as its principal alloying elements. The most widely used alloy in this group of stainless steel is Type 304, also known as the 18-8 stainless steel. Despite its many advantages, Type 304 stainless steel has difficult machining characteristics, due to its inclination to work harden at a very rapid rate. To increase its machinability, material scientists have modified Type 304 by adding sulfur or selenium. The resulting stainless steel is Type 303. The material composition of Type 303 has slightly altered other characteristics as well. Let's take a closer look at what are the differences between 304 and 303 stainless steel?


Physical and Mechanical Properties

Most of the physical properties, such as density, modulus of elasticity, specific electrical resistance, specific heat, thermal conductivity, thermal expansion, magnetic permeability, and annealing temperature of both Type 304 and Type 303 stainless steel are the same. Mechanical properties slightly differ. Type 303 has somewhat higher tensile strength when compared to the Type 304, but has lower yield strength and elongation capacity. 

Chemical Properties

The main difference between chemical compositions of Type 304 and Type 303 is the addition of Sulphur to the later. Next to the added Sulphur, Type 303 has a significantly increased amount of Phosphorus. Type 303Se version contains Selenium. Nevertheless, the production of 303Se is rare nowadays.

Stainless steel alloys such as Type 303UX and Type 304Cu additionally contain Copper in their chemical composition. Copper reduces work hardening and permeability, provides corrosion resistance, and increases the machinability of the alloy


Machinability

Long, stringy chip of 303s in our shopfloor

Long, stringy chip of 303s in our shopfloor

When compared to other materials such as Aluminium or Low-Carbon Steel, Stainless Steel is more difficult to machine. It tends to produce long and stringy chips leading to the built-up edge on the tool. The reasons behind the differences in the machining of stainless steel lay in the following properties; high tensile strength, the large spread between yield strength and ultimate tensile strength; high ductility and toughness; high work-hardening rate; and, low thermal conductivity.

Despite its properties and different behaviour, stainless steel is machinable using proper technique. Namely, Stainless Steel requires more power, lower cutting speeds, only positive feed, rigid tooling and fixtures, utilisation of chip breakers or curlers, and excellent lubrication and cooling during machining.

Chip-breakers of different geometry perform differently at different speeds and feeds.Source: https://www.kyocera-unimerco.com/

Chip-breakers of different geometry perform differently at different speeds and feeds.

Source: https://www.kyocera-unimerco.com/

Among many alloys of stainless steel, some are more machinable than others. The more machinable family of stainless steel alloys is called the free-machining alloys. Type 303 is the most common member of this family. Free-machining alloys contain additional material composition elements such as Sulphur, Selenium, Lead, Copper, Aluminium, and Phosphorus. Free-machining alloys produce less friction and less material accumulation when in contact with the machining tool. Additionally, chips break off easily during the machining.

Type 303 Stainless Steel has improved machinability over Type 304, which is a non-free-machining type. On the other hand, Type 304 stainless steel weldability is higher when compared to Type 303.


Corrosion Resistance

All of the austenitic stainless steel types have excellent corrosion resistance. Differences in the chemical composition of alloys cause the differences in corrosion resistance. Type 303 stainless steel has decreased corrosion resistance when compared to Type 304, due to the addition of Sulphur and phosphorus. 

Type 303 resists corrosion from all atmospheric sources, steriliSers, organic chemicals, and dyes. They resist the nitric acid well, Sulphuric acid moderately and halogen acid poorly. For optimal corrosion resistance, all parts made of Type 303 Stainless Steel should be cleaned and passivated after the machining to remove grease, oil, fingerprints, and other foreign particles such as leftover Iron particles from tooling.


Applications

304 shaft for medical device

304 shaft for medical device

Due to its increased machinability, we use Type 303 stainless steel to make parts that need heavy machining. The most common applications of Type 303 are machining of screws, nuts and bolts, aircraft fittings, gears, bushings, electrical components, valve bodies, shafting, and valves.

Type 304, being one of the most popular stainless steel alloys, is used to make kitchen appliances, food or liquid processing equipment, construction materials, marine equipment, chemical containers, automotive parts architectural trims, and heat exchangers.

Due to its high corrosion resistance and low carbon content, Type 304 stainless steel is a material of choice for medical equipment. Type 304 does not chemically react with bodily tissues and sterilising solutions. It can withstand hard and repetitive wear, usually associated with medical use.  

Machinability is a significant property of steel alloys. However, in highly corrosive environments and underwater applications, corrosion resistance is the primary concern. Type 316 has one of the highest corrosion resistance among the stainless steel alloys. Type 316 is very similar to Type 304, but it has an increased amount of molybdenum that provides high corrosion resistance. Type 316 is an alloy of choice for orthopaedic implants and artificial heart valves.


Conclusion

There are a wide variety of stainless steel alloys. Even though the majority of stainless steel material in the world is Type 304, it has low machinability property. Many applications that put the focus on the machinability of the materials employ Type 303 stainless steel. Type 303 also has desirable non-galling properties. Galling is a form of wear caused by adhesion between sliding surfaces. This property makes the disassembly of parts easy. 

Type 303 stainless steel has high machinability, chips break off easily, and machining rates of this stainless steel reach up to 40 surface meters per minute.

Type 303 is a material of choice for Swiss-type lathe turning. The choice of material affects the ratio of machinability to cost. In our experience, the cheapest material does not always yield a lower cost. We cover this topic in the blog article on "the true cost of quality." Materials that have low machinability require frequent tool change, have increased downtime, and poor surface finish. One rule of thumb applies to the machining of stainless steel, as the machinability decreases the associated machining costs increase.

We at Turntech Precision leverage our knowledge and experience to deliver the best and the most cost-effective Swiss-type lathe machined parts to our customers. We utilize the advantages of our machines and proper material selection, to produce top-quality parts for many different industries. Contact us today with your inquiries.