Simple case-hardening steel

case-hardening steel

Steel is a common durable alloy, and although most of the steel used in the tool is already tough, you can tighten it further to prevent corrosion and damage. Hardened steel prevents knife and tool blades from bending and breaking. With a simple heating and cooling process, you can make your steel last much longer!

Heat treatment is the use of heat to modify the properties of matter, especially in metallurgy. It is a kind of industrial process involved in changing the chemical and physical properties of metals and metal alloys. There are four main types of heat treatment methods such as annealing, tempering, hardening and normalization. Hardening is the process of increasing the hardness of the metal. There are two main types of hardening processes such as case hardening and surface hardening. The main difference between hardening of the case and surface hardening is that the hardening of the can increases the hardness of the metal surface by implanting the elements in the material surface, forming a thin layer of solid alloy while the hardening of the surface increases the hardness of the surface while the core remains relatively soft.

What is the hardening of the case?

The hardening of the enclosure is the process of hardening the metal surface by planting elements on the metal surface, forming a thin layer of solid alloy. This outer layer is called a “state,” which leads to the process being called state hardening.

16MNCR5 steel grade

16MnCr5 steel is a hardened engineering alloy for the alloy case for parts requiring a basic tensile strength of 800 to 1100 N / mm2 and good wear resistance. It is an engineering material commonly used to manufacture piston screws, camshafts, cranes and other mechanical engineering components and vehicles. It is manufactured from sizes 23.5 mm to 80 mm in rounds, 22 mm to 63.5

  • in bright rods and 55 mm to 75 mm RCS. These alloys are used for high-pressure parts with medium cross sections for automotive and general engineering applications, such as cam shafts, forged gears, gear shafts, linings and connecting rods.


16MnCr5 and 20MnCr5 steel

Chemical Composition (in% weight) C Si Mn Cr Mo Ni V W Others 0.20 Max. 0.40 0.75 1.05 – – – – – Description of carbon steel. Applications For Hardened State. Bottom of service: exles, installation keys, etc. Physical properties (regional values) at ambient temperature Flexibility [103 x N / mm2]: 210 Density [g / cm3]: 7.85 Soft plastic annealing temperature to 650-700 ° C, cold.

Equipment to be used

Conventional fluidizing bed furnaces for steel hardening can be used with limited additional equipment. The following facilities are needed: an activator supplying system, an exhaust gas cleaning system, a quenching system, and a system to detect poor fluidizing, etc. To prevent a shortage of active CFE/NFE in the beds caused by high speed gas flow, the activators should frequently be added into the beds during each coating cycle. Gaseous activators can be fed easily into the fluidizing gas flow. For solid particles, a dropping type pellet feeder has been used successfully.

It is highly recommended that the system includes a quenching chamber so that the coated pieces can be quickly transferred into a quenching system with no oxidation during transportation. Gas cooling/quenching chambers attached to the TRD coating furnace seem to be most practical. A method to monitor the occurrence of ill-fluidizing should be used in order to allow prompt detection. This can be achieved by watching the changes in temperature differences between the thermocouples placed in at least two different positions inside the wall of the retort. Figure 19.15 exemplifies a furnace set-up, which is successfully utilized for small components made of air hardening steels.

  • We offer a wide range of steel products in a wide range of dimensions and execution, according to common international specifications or customize, machines and heat treatment are also available and we recommend you to choose the right material.

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