CN106767288A - The method for measuring electric furnace refractory brick residual thickness - Google Patents

Abstract

Method the present invention relates to measure electric furnace refractory brick residual thickness, first the brand-new refractory brick to lining cutting measure, obtain refractory brick small end width for a₁, big end width is a₂, refractory brick thickness is b₁；Electric furnace is a using the small end width after refractory brick corrodes after preset times, is measured with ruler₃, using formula：Calculate, the residual thickness b after refractory brick erosion₂.Measurement data is more accurate.

Description

The method for measuring electric furnace refractory brick residual thickness

Technical field

The present invention relates to the detection of electric furnace lining cutting, the method for particularly measuring the refractory brick residual thickness of electric furnace lining cutting.

Background technology

Electric furnace is conventional metallurgical equipment, as shown in figure 1, its stove inwall is the lining cutting that refractory brick 1 is built by laying bricks or stones, for resisting electricity Arc and high-temperature slag corrode.Refractory brick section is trapezoidal, and trapezoidal small end inwardly, is greatly held towards the footpath of electric furnace towards the footpath of electric furnace when building by laying bricks or stones Outwards.

As equipment access times increase, refractory lining is constantly etched scaling loss and gradually thinning, when refractory brick is depleted to Must be repaired after to a certain degree or be changed brand-new furnace lining, otherwise easily occur burning leakage accident.Changed to accurately hold Opportunity of furnace lining, it is necessary to measure statistics to lining cutting depth of erosion and residual thickness, to instruct safety in production.

Existing lining cutting residual thickness monitoring method, mainly has, and temperature sensor is buried in lined with refractory bricks, using temperature Degree Sensor monitoring to temperature judge refractory brick residual thickness, but temperature and refractory brick thickness do not have absolute corresponding close System, therefore can not obtain accurately data, and buried in refractory brick the devices such as a large amount of thermocouples be also required to it is at a relatively high Cost；Also someone has invented special detection ruler, such as patent of Application No. 200710011703.4, and it is stretched using detection ruler Enter furnace interior, measure actual lining cutting internal diameter, compare to calculate refractory brick residual thickness with lining cutting original inner diameter, though the method Accurate data can be so obtained in theory, but workman is difficult to ensure that detection ruler is exactly in horizontality, therefore inspection when detecting every time Survey accuracy low.

The content of the invention

The technical problems to be solved by the invention are：A kind of method for measuring electric furnace refractory brick residual thickness is provided, can be accurate True calculates residual thickness.

The technical solution adopted for the present invention to solve the technical problems is：

The method for measuring electric furnace refractory brick residual thickness, including the following steps that order is carried out：

A, the brand-new refractory brick to lining cutting are measured, and obtain refractory brick small end width for a₁, big end width is a₂, fire resisting Brick thickness is b₁；

B, electric furnace are a using the small end width after refractory brick corrodes after preset times, is measured with ruler₃, using formula：

Calculate, the residual thickness b after refractory brick erosion₂。

Further, the step B is the small end width after being corroded using vernier caliper measurement refractory brick.

The beneficial effects of the invention are as follows：Above-mentioned measuring method, first records big end, small end and the thickness gauge of brand-new refractory brick It is very little, after electric furnace is using a period of time, measure out the small end width after refractory brick corrodes with a yardstick, then calculate residue using formula Refractory brick thickness, data are more accurate.

Brief description of the drawings

Fig. 1 is the schematic top plan view of electric furnace inside lining cutting；

Fig. 2 is one piece of schematic cross-section of refractory brick；

Reference is in figure：Refractory brick 1.

Specific embodiment

The present invention is further described with reference to the accompanying drawings and examples：

The method for measuring electric furnace refractory brick residual thickness, including the following steps that order is carried out：

A, the brand-new refractory brick to lining cutting are measured, the original size of measurement：Refractory brick small end width is obtained for a₁, greatly End width is a₂, refractory brick thickness is b₁；

B, electric furnace are a using the small end width after refractory brick corrodes after preset times, is measured with ruler₃, using formula：

Calculate, the residual thickness b after refractory brick erosion₂。

As shown in figure 1, be the schematic top plan view of electric furnace inside lining cutting, refractory brick 1 builds Cheng Yiquan by laying bricks or stones, and small end is towards electric furnace Footpath inwardly, after electric furnace use, small end can suffer erosion scaling loss.

As shown in Fig. 2 sections of the ABCD for refractory brick, AB is big end, and CD is small end, first carries out chi to brand-new refractory brick Very little measurement, measures refractory brick small end width for a₁, big end width is a₂, refractory brick thickness is b₁。

Using after certain number of times, there is different degrees of scaling loss to electric furnace in refractory brick, as shown in Fig. 2 FGE is refractory brick scaling loss Remaining small end situation afterwards, the width that FGE is measured with ruler is a₃, according to formulaCan calculate Residual thickness b after refractory brick erosion₂。

Can be using slide measure or precision tape higher when measuring the width of FGE.With it is foregoing similarly, Ke Yiji Calculate any one piece of residual thickness of refractory brick.

Claims (2)

1. the method for measuring electric furnace refractory brick residual thickness, it is characterised in that including the following steps that order is carried out：

A, the brand-new refractory brick to lining cutting are measured, and obtain refractory brick small end width for a₁, big end width is a₂, refractory brick thickness It is b to spend₁；

B, electric furnace are a using the small end width after refractory brick corrodes after preset times, is measured with ruler₃, using formula：

$b_2=\frac{a_2-a_3}{2}\×\frac{2b_1}{a_2-a_1};$

Calculate, the residual thickness b after refractory brick erosion₂。

2. the method for measuring electric furnace refractory brick residual thickness as claimed in claim 1, it is characterised in that the step B is to adopt Small end width after being corroded with vernier caliper measurement refractory brick.