Process Know-how

Selecting steel anchors for monolithic refractory linings

Part 2: Major failure mechanisms

Summary: The correct selection of steel anchors for monolithic linings is critically important as the integrity of the anchor in a refractory lining as it is one factor in determining the life of the lining. To more accurately determine stresses in refractory anchors numerical analyses must be carried out. Creep rupture stress and oxidation rates are two critical parameters that need to be taken into account. Part 1 of this article focuses on the basics, Part 2 on major failure mechanisms.

6 Sigma phase in refractory anchor materials
It is known from technical articles (e. g. [10]) that some stainless steels can degrade under various thermal conditions, e.g. 310ss forms a complex chromium-rich intermetallic compound, known as sigma phase in the temperature range of 500 °C to 900 °C. The amount of sigma phase formed increases with time if the steel is held at reasonable constant temperatures. The formation of this chromium complex is commonly held to be undesirable as it may change the metallurgical properties of the steel. Sigma phase has a variable composition depending on a...

Related articles:

Issue 2009-01 Process Know-how

Selecting steel anchors for monolithic refractory linings

Part 1: Basics

1 Introduction The reliability of stainless steel refractory anchors in refractory lined process vessels is becoming more critical as companies pursue greater efficiency and safety. Therefore...

more

Refra Prague 2017

The Czech Ceramic Society invites to the 19th conference on modern refractory materials and key achievements in high temperature technologies, which will take place in Prague from 30.05.-01.06.2017 at...

more
Issue 2017-1-2 30.05.–01.06.2017, PRAGUE/CZECH REPUBLIC

Refra Prague 2017

The Czech Ceramic Society invites to the 19th conference on modern refractory materials and key achievements in high temperature technologies, which will take place in Prague from 30.05.-01.06.2017 at...

more
Issue 2018-1-2 WO2017181256 (A1)

Modular refractory coating assembly for tip of burner

(22) 18.04.2017 (43) 26.10.2017 (57) A modular assembly (2) is described for coating with refractory material the tip of a burner which introduces solid or liquid fuel into a rotary kiln for producing...

more
Issue 2009-11

High temperature corrosion of anchor systems for refractory constructions at different atmospheres and temperatures

1 Introduction Highly heat resisting and high-alloyed steels, as well as nickel- based alloys are used for building chemical and metallurgic plants. These materials are used in anchorages and...

more