Welcome to this Ring Die 2023 buying guide! Whether you're a novice or a seasoned purchasing professional, this guide will provide you with everything you need to know about the Ring Die in just 5 minutes. As a key pellet processing unit, the Ring Die plays a vital role in modern agriculture and animal husbandry. We hope that whether you're looking for the Ring Die that best suits your needs or want to keep up to date with the latest trends and technological developments in the market, this guide will provide you with clear insights and practical advice. Let's dive in together for your Ring Die selection process.
In this guide, we provide a comprehensive overview of how to choose the most suitable Ring Die, covering key factors, technological innovations and what to look for during the buying process. If you're producing feed, wood pellets, or something else, our goal is to help you make a relatively sound decision in a crowded marketplace, and to help you buy the right ring die. let's keep the discussion tightly centered on the following topics: material choices, design considerations, performance metrics, maintenance pointers, and industry trends.
Come on, then let's start to see the world of Ring Die!
1. What is ring die?
Ring dies are ring fittings with porous surfaces. Ring molds have thin walls, and dense holes, and assembly requires high dimensional accuracy. It is one of the most important and easily worn accessories in the pellet mill.
The ring die is mainly made of high carbon and high chromium steel (4Cr13) and alloy steel, in order to ensure the wear resistance and corrosion resistance of the ring die. The hardness of the ring die is ensured by high temperature carbonizing or vacuum quenching. The ring die should have a suitable die hole arrangement and compression ratio based on the product to be manufactured so that it will be more productive with the same opening area.
During the production of a ring die, each step must be finished to the standard size in order to ensure that the various indicators will meet the requirements.
As raw materials are extruded into the die hole of the pellet mill, the ring die cooperates with the roller shell to produce the desired granular product. Ring dies are very easy to wear due to the constant friction of the material. As a result, a ring die's quality directly affects the extruded particles' quality.
Currently, ring dies are widely used for producing animal feed, biomass pellets, pharmaceuticals, aquatic feed, livestock feed, and other pellets.
2. Function of ring die
The ring die is the most important part of the pellet mill, and it is also the one with the most loss. In this stage, raw materials entering the pellet mill are transformed into granular products. The material of the ring dies pellet mill enters the working area between the die rolls from the feeding table. Under the action of centrifugal force and frictional force, the material is close to the inner wall of the ring die. With the rotation of the roller shell and ring die, the material is squeezed continuously, pressed into the die hole with a certain density, formed in the die hole, and then extruded from the die hole and cut into the granules.
3. Application of ring die
Ring die granulation technology is widely used in the feed industry, the renewable biomass energy industry and the pharmaceutical industry. Different granulators are used for different materials, but the core part is the granulator ring die. Ring die has a great impact on improving product quality, reducing energy consumption, and reducing production costs. At the same time, the ring die is also an accessory that is very easy to wear. For this reason, it is extremely important for the manufacturer to understand the design and application of the ring die, select the correct ring die, and use and maintain the ring die properly.
4. Use of Ring Die
During the use of the ring die, the most critical part is to adjust the working gap between the ring die and the roller shell. If the gap is too large, the extrusion force is less than the frictional force of the material passing through the die hole, and the material will block the die hole and cause the machine to plug. If the gap is too small, the ring die and the roller shell will be easily damaged.
The size of the gap is closely related to other factors such as the age of the ring die and the roller shell, the size of the ring die aperture and the difficulty of granulating the raw material. The new one is suitable for a slightly larger gap, the old one is suitable for a slightly smaller gap, a larger gap is used for large apertures, and a smaller gap is used for small holes, easy-to-granulate materials use larger gaps, and difficult-to-granulate materials use smaller gaps.
The control of the gap size requires the operator's actual operating experience and long-term experience accumulation in order to better master it.
The ring die of the pellet mill needs to be used together with the roller shell. Usually, the new ring die must be matched with the new roller shell in order to ensure that the working surface of the new ring die is pressed evenly, that is, that the ring die can maximize its use efficiency.
After granulation, if the pellet mill needs to be shut down or the ring die needs to be changed, and when the ring die is not in use for a period of time, the residual feed in the die hole should be cleaned with non-corrosive oil, so that the material can discharge smoothly when it is used again, and prevent die hole corrosion.
With no action taken, the residual heat of the ring die will dry and harden the feed remaining in the die hole, resulting in the following conditions:
1. When the production starts again, the hole of the ring die is blocked and no material is extruded
2. During production, the strength of the ring die is weakened due to the high pressure, which may cause the ring die to crack
3. Part of the die holes of the ring die is blocked, the output is reduced, and the efficiency is reduced
5. Wear and failure of ring die
The ring die will begin to show signs of wear after being used for a while, the die hole will become larger, the discharge will decrease, the die wall will thin out, the strength will decline, the cross-section will show cracks and continue to expand, and the ring die will eventually fail due to these symptoms.
6. Care and maintenance of ring die
It is inevitable that the following situations will arise during the production process of the ring die of the pellet mill: the ring die is blocked, worn to various degrees, and the cone mouth is deformed. In this process, if the necessary maintenance of the ring die is not carried out, it will inevitably increase the energy consumption, reduce the production capacity and affect the benefits.
1. Whenever the ring die is used for a period of time, it is necessary to regularly check whether there are local protrusions on the inner surface of the ring die, as well as whether the die hole guide port is ground, and sealed, or turned inward. If this happens, the ring die should be repaired in time to prolong the service life of the ring dies.
2. If most of the die holes are blocked, the material can be softened by soaking it in oil, and then granulated again.
3. The working surface of a ring die can not be beaten with hard steel tools when loading or unloading.
4. Make a record of the use of the ring die, so as to accurately count the actual service life of the ring dies.
5. The ring die must be stored in a dry and clean place, and the specifications must be marked. If it is stored in a humid place, the die hole will be corroded, which will reduce the service life of the ring die or affect the discharge effect.
7. Famous ring die
On the market, there are major brands of ring dies such as CPM, BUHLER, FAMSUN, Andritz, Van arson.
8. How to Customize ring die
1) Inquire
Send us an inquiry through E-mail, or Whatsapp, or leave a message on our official website. We will provide comprehensive advice on product design based on your needs.
2) Offer
As a real manufacturer, Jinding is able to offer the most cost-efficient and competitive price
3) Order
Upon reaching the agreement, the production department will arrange for immediate production
4) Manufacture
Advanced equipment will be used throughout the manufacturing process, and each step will be precisely controlled by employees with more than 10 years of experience.
5) Quality control
Products are strictly inspected at each stage of the manufacturing process, and any defective products are immediately discarded
6) Packaging
Exporting packages suitable for long-distance shipping by air or sea
7) Shipment
Jinding has long-standing relationships with shipping companies for each line, which allows us to provide a convenient and reliable logistics service
8) Service
Jinding has a professional support team that is ready to assist you whenever you need them
9. Company and product advantages
For the last 30 years, the high-quality raw materials and modern equipment we use enable our company to produce products automatically and efficiently, allowing us to provide high economic benefits to our customers. Ring dies, flat dies, roller shells and other products produced by our company are widely popular with customers. And many of them have long-term cooperation relationships with us, such as Buhler, Famsun, New Hope, Haid, etc.
1) Company
We are a large-scale enterprise with strong production capabilities and extensive manufacturing experience
Sincerity is always our priority with our customers since only this way can we build a long-term, mutually beneficial relationship.
We invest a lot in updating technology and introducing new equipment every year. Trusted by more than 3000+ customers globally
2) Products
● We guarantee to use the best raw materials
● Our company is capable of meeting any requirement based on the drawing provided by our customers
● The product has a longer life than similar products on the market, due to strict quality control
● We have a wide range of products with different production lines for each of them
● Continuously improve technology to provide customers with the most cost-effective products
● Short leading time
3) Service
● We offer customer-specific inventory plans
● 24/7 global delivery and after-sales support
● From raw materials to any subsequent steps, we regularly inform our customers about our manufacturing processes
● We are willing to listen to the voice of our customers with any suggestion that can improve our products and services
10. How to Choose ring die
The ring die is a porous annular wearing part with high dimensional precision. The raw materials are extruded from the inner wall through the die hole into strips under the rotary extrusion of the ring die and the pressing roller and then cut into particles of the required length by the cutter.
It is an integral part of the pellet machine, which directly affects its power consumption, production, and quality. There are a few points that we need to consider when choosing a ring die for a pellet machine
The most important part of choosing a ring die is to select an appropriate die hole and the roughness of the die hole. The pellet mill should be tested for pellet quality and production capacity after the new ring die is installed. It means that the selected ring die does not match the raw material produced if it cannot meet the standard and the operation index is abnormal. In this case, the ring dies size should be re-selected.
Furthermore, the design of the ring dies greatly influences the pellet machine's production capacity and product quality. Ring die material, compression ratio, die hole shape, and opening ratio are all factors to consider when choosing a ring die.
1) Material of ring die
A ring die is usually made from carbon steel, alloy structural steel, or stainless steel by forging, machining, drilling, and heat treatment. The material of the ring die depends on the application.
2) The compression ratio of the ring mode
According to the raw material formula, the user can determine the compression ratio of the ring die. It is beneficial to select a slightly lower compression ratio to increase output, reduce energy consumption, and reduce wear on the ring die, however, this will also might affect the quality of the particles and increase the pulverization rate.
3) Die hole shape of ring die
The die hole of the ring die includes a straight hole, a stepped hole, an outer tapered hole, and an inner tapered hole. Different materials require different die hole diameters.
11. Company's products VS well-known brands
1. Those companies are well-known, but most of them are sold with matching machines at a much higher price.
2. Compare with them, we are very famous in the Chinese domestic market because of specializing in accessories for 30 years, our products are more focused and refined.
3. The ring dies manufactured by these companies are for their own machines with brand and mode limited. Furthermore, they do not support customizing products of other brands.
4. We are able to tailor-make and make any adjustments in our product design and production process according to customer requests, which is much more flexible rather than those competitors.
12. Conclusion
We can understand ring die from different perspectives, including what it is, how it works, how to wear it, and how to keep it in good condition. Taking all factors into account, how should we choose the ring die, as well as the customization process. Chinese rings die are attracting more people since they are cheaper and more effective than other foreign big-brand products.
JinDing Machinery has been manufacturing feed machine parts for over 30 years. We provide customized solutions for each customer. If you are interested in discussing your view, requirements, or drawing design for a customized product, you are welcome to contact us. We can customize products to your specifications.
