Mining coatings: how to make the best choice

Liners are one of the most important parts of mining equipment, as they interact directly with the material to be processed. They are replaceable parts that protect the internal parts of machines and casings, preventing unscheduled downtime and making production more efficient.

In this article, we will discuss four types of metallurgical alloys for coatings that provide excellent results.

We will also show that the supplier needs to have experience in projects, while at the same time knowing when to customize the solution for the client.

Find out how Máquinas Furlan can help your mining company with this decision, including an industrial park that houses all metallurgical processes.

Why use coatings on machines?

In mining, linings are among the parts that contribute to the good result in the productivity of the installation. Currently, wear parts represent 40 to 60% of the production cost of a company in the mining sector.

Like other mining castings, the design of linings is based on: the properties of the material to be processed; details of the specific application; and the operating conditions.

Therefore, the mining team needs to be vigilant, since any downtime represents an increase in operating costs. Even when the downtime is part of a maintenance program adopted by the company, resuming operations as quickly as possible is essential. Therefore, the mining company must ensure that the part lasts longer.

Another factor is the efficiency of the plant. The shutdown of the production line affects efforts to deliver materials to customers within the agreed deadline, and can also increase the period of inactivity of the mining company's employees.

Hence the importance of applying coatings, the purpose of which is to protect the internal surfaces of equipment against wear, abrasion and impact. This protection extends the useful life of the machine, as well as generating operational efficiency. It is commonly used in the crushing stage.

What types of alloys are best for coatings? See 4 examples

Choosing the best metallurgical alloys for coatings involves several factors: operating conditions, ore types and production rates, among others. Generally, the alloys used for coatings must be resistant to abrasion, impact and corrosion.

The Furlan team cites four types of alloys commonly used in coatings:

1. Manganese steel

It is known for its high impact resistance and is often used in crushing applications.

2. Chromium molybdenum

This alloy offers a good combination of wear and impact resistance and is used in a variety of equipment parts.

3. Abrasion resistant stainless steel

We are talking about an alloy that can be used in corrosive environments, providing protection against wear and corrosion.

4. High chromium

Alloys of this type have high resistance to abrasion. They are commonly used in ball/rod mills, machines used to generate low-granulometry material.

In general terms, we are talking about alloys that will be used in parts exposed to abrasion, impact and corrosion, among other factors that are part of the strict working conditions of a plant. Scheduled replacement of a lining will help prevent damage to even the structural parts of a mill, for example.

The entire operation also takes into account material compatibility. Cast parts commonly come into contact with other components, and coatings are one of them. At this point, material compatibility must be considered to avoid problems such as galvanic corrosion.

Experience, durability and customized projects: the differences between Furlan parts

The issues mentioned so far are important to guide the mining company's final decision regarding the supplier that will be chosen. The machinery industry must combine expertise and continuous improvement among its attributes.

Máquinas Furlan is one of the leading suppliers of mining equipment, accessories and steel castings. The Castings Division's collection contains more than 12 thousand models of wear and replacement parts, which equip the items in its catalog and also materials developed by other national and international brands.

Visit the Castings Page on our website.

Over 61 years of operations, the focus has been on customer success in mining and the generation of aggregates for construction. The improvement process is part of the action called “Metallurgical Excellence”. The Furlan industrial park brings together, in a single space, operations that generate a complete solution for this customer.

Located in Limeira (SP), the park houses each stage of the production of a machine or part – steel manufacturing, heat treatment, machining, boilermaking and equipment assembly.

The durability of Furlan coatings and other parts is increasing, resulting in fewer downtimes at crushing plants. This durability is largely the result of the development of customized projects.

In addition to the alloys already mentioned, there are special compounds, determined based on the customer's design.

So, if your company is looking for a process marked by maintenance planning and cost reduction, it's time to seek out the Máquinas Furlan team and learn more about this type of part, which is essential for mineral processing.

Contact us here .