IQ Technologies Inc.

Akron, United States

IQ Technologies Inc.

Akron, United States
SEARCH FILTERS
Time filter
Source Type

Kobasko N.I.,IQ Technologies Inc. | Batista A.A.,University of Sao Paulo | Canale L.C.F.,University of Sao Paulo | Totten G.E.,Portland State University | Dobryvechir V.V.,Intensive Technologies Ltd.
Materials Performance and Characterization | Year: 2013

The cooling capacity of coconut oil, palm oil, and petroleum oil were determined by solving the inverse problem (IP) using the newly developed commercial code, IQLab. It was shown that all of the oils exhibited shock-film-boiling, film-boiling, and convection-heat-transfer modes during the quenching process. The results of these investigations are necessary when developing a global database of the cooling capacity of different quenchants. The results obtained by solving the inverse problem are compared with simplified calculation results based on cooling time-temperature data obtained by using a multi-thermocouple Inconel 600 probe. The results obtained showed that the results from both methods agreed within ±10 %. These results suggest that the standard Inconel 600 probe can be used in many cases for determining average heat-transfer coefficients occurring when using vegetable oils, such as coconut oils, palm oils, and petroleum oils as quenchants. © 2013 by ASTM International.


Kobasko N.I.,Intensive Technologies Ltd. | Kobasko N.I.,IQ Technologies Inc.
Journal of ASTM International | Year: 2011

A method for optimizing the chemical composition of steels to obtain optimal residual stress distribution throughout the section of a steel part is proposed, which is based on the analytical equation for the calculation of ideal critical diameter (DI). The advantage of this method consists of the opportunity to calculate the ideal critical size for a variety of geometries on the basis of their respective continuos-cooling transformation (CCT) diagrams. Detailed discussions are provided relating to the optimal depth of the hardened layer, which provides high surface compressive residual stresses and minimal tensile stresses in the core. It is also shown that the ratio of the DI to the diameter of the part with an optimal residual stress distribution should be the same, that is, DI/Dopt=const with steel parts of varying sizes. This relationship can be used for the development of new technologies for large-sized parts based on the results obtained for small parts. The service life of steel parts increases after intensive quenching due to the formation of high surface compressive residual stresses and improved mechanical properties. During intensive quenching, the effect of additional strengthening (super strengthening) of the material is observed, which is connected with the intensification of cooling process within the martensite range. Copyright © 2011 by ASTM International.


Kobasko N.I.,IQ Technologies Inc. | Kobasko N.I.,Intensive Technologies Ltd.
Journal of Materials Engineering and Performance | Year: 2014

In the paper, new phenomena are discussed which were discovered during investigation of the intensive quenching processes. It is shown that in many cases film boiling is prevented completely during quenching of steel parts in cold liquids, especially in water salt solutions. In this case, the part surface temperature drops almost immediately to the liquid boiling point at the beginning of the quench and then maintains at this level for a relatively long time, i.e., the so-called self-regulated thermal process is established. A simple equation for determining the duration of the self-regulated thermal process is proposed. Thermal waves are generated during an immersion of steel parts into a cold liquid and after the self-regulated thermal process is completed. The thermal waves move in opposite direction from where the cooling process starts. The self-regulated thermal process was used to develop an original intensive quenching technology (IQ-2 process). It can be a basis for developing other new technologies such as an austempering and a martempering in cold liquids under pressure. Discovered effects of thermal waves can be used for determining a duration of the self-regulated thermal process and for reconstructing an existing theory on the double electrical layer. Practical examples of calculations of the duration of the self-regulated thermal process are provided in the paper. © 2014, ASM International.


Kobasko N.I.,IQ Technologies Inc. | Kobasko N.I.,Intensive Technologies Ltd.
ASTM Special Technical Publication | Year: 2012

In this paper, a detailed discussion is provided regarding an effect of the accuracy of temperature measurements on the evaluation of heat transfer coefficients (HTCs) during quenching in liquid media. Some published results on the use of test probes for HTC determination are discussed. These results show that the values of HTCs obtained under the same quench conditions and using test probes of the same size differ by 5 to 8 times. This is a major reason for the writing of this paper. Understanding why there is such big difference in the experimental values for the HTC is very important in planning a study for the development of a global database for different kinds of quenchants. This understanding will help scientists and engineers to develop new, correct data on HTCs needed for computer simulations and for improving the quenching processes of steel parts. Copyright © 2012 by ASTM International 100 Barr Harbor Drive PO Box C700 West Conshohocken PA 19428-2959.


In the paper the new explanation in manufacturing of Damascus steel, based on discovered the specific characteristics of transient nucleate boiling processes, is provided. Also, the future of continuous casting in the paper is discussed. According to discovered characteristics, duration of transient nucleate boiling process is directly proportional to squared size of a steel part and inversely proportional to thermal diffusivity of material, depends on configuration and initial temperature of component, thermal properties of liquid. The surface temperature of steel part during transient nucleate boiling process maintains at the level of boiling point of liquid and cannot be below it. Based on these characteristics, the new hypothesis regarding manufacturing of Damascus steel is proposed according to which the melted high carbon steel (containing 1- 2% carbon) was casted into copper forms cooled by cold water and then the steel was many times forged and quenched in special water salt solutions until finishing transient nucleate boiling process. Such simple technology provided extremely small spherical carbides distributed in steel which acted as a saw and made steel very strong. It is stated that high strength materials with fine microstructure can be achieved by applying intensive cooling to continuous casting.


Kobasko N.I.,IQ Technologies Inc.
Journal of ASTM International | Year: 2011

In the paper a review of the transient nucleate boiling process duration is widely discussed. It has been established that duration of transient nucleate boiling process is directly proportional to square of the thickness of steel parts and inversely proportional to thermal diffusivity of a material, depends on the configuration of steel parts, liquid properties, and its velocity. The transient nucleate boiling (self-regulated thermal process) is followed by amazing regularities: The surface temperature during nucleate boiling is maintained at the level of the boiling point of the liquid, which is used as a quenchant. During this period, average effective heat transfer coefficients and average generalized Biot numbers and Kondratjev numbers can be found which significantly simplify core cooling time and cooling rate calculations. Using established characteristics of the transient nucleate boiling process, the new intensive quenching (IQ) technologies were developed: IQ-1; IQ-2: IQ-3. In the paper the steel super-strengthening phenomenon and optimal quenched layer, which provides maximal residual compressive stresses at the surface of steel parts, are discussed, which increase service life of products. Instead of oils, plain water is used as a quenchant, environmental conditions are significantly improved. © 2011 by ASTM International.


Kobasko N.,IQ Technologies Inc. | Kobasko N.,Intensive Technologies Ltd.
8th WSEAS Intl. Conf. on Fluid Mechanics, FM'11, 8th WSEAS Intl. Conf. on Heat and Mass Transfer, HMT'11, 8th WSEAS Intl. Conf. on Mathematical Biology and Ecology, MABE'11 | Year: 2011

To make computer simulation for heat treating industry possible, engineers need a database for cooling capacity of different kinds of quenchants. Unfortunately, there is no such database available for engineers and computer programmers yet. As a rule, investigators use standard Inconel 600 probe or silver probe with one thermocouple at the core to measure cooling capacity of quenchants. It is shown that Inconel 600 probe can provide average effective heat transfer coefficients. Silver probes can be used to measure the heat transfer coefficients during full film boiling and to measure critical heat flux densities. It is shown that critical heat flux densities must be measured to predict heat transfer modes during quenching and optimize the process of cooling. It is stated that heat transfer coefficients should be calculated on the basis of solving inverse problem based on testing real steel parts with thermocouples near the surface. The possibility of use the first kind of boundary condition in the paper is widely discussed. Such approach simplifies significantly calculations and can be combined with the third kind of boundary condition.


Trademark
IQ Technologies Inc. | Date: 2016-07-22

heat treating equipment and parts therefor.


Trademark
IQ Technologies Inc. | Date: 2012-10-30

Electric massage appliances, namely, electric vibrating massager.


Loading IQ Technologies Inc. collaborators
Loading IQ Technologies Inc. collaborators