GB/T 18257-2021回转窑用耐火砖热面标记/Hot-face identification marking of refractory bricks for use in rotary kilns
回转窑用耐火砖热面标记
1范围
本文件规定了回转密用耐火砖热面的标记方法。
本文件适用于回转密用耐火砖的热面标记设计及选用。
2规范性引用文件
本文件没有规范性引用文件。
3 术语和定义
本文件没有需要界定的术语和定义。
4技术要求
4.1 总则
回转窑用耐火砖热面标记通常采用沟法。根据需要可采用色标法作为补充标记注:是否需要色标由供需双方商定。
4.2 沟槽法
沟槽类型
4.2.1沟槽类型
为了便于辨认,每种沟槽的形状应不同,并深人砖体。所有槽口周边应呈弧形。图1给出了三种沟槽形状,可任选其中一种。沟槽的尺寸不做规定。
4.2.2 标记位置
沟槽应位于耐火砖热面中心线上或距该中心线约 66 mm 的直线上,如图1所示
标引序号说明:
1-沟槽标记中心线:
2-砖的中心线和标记中心线;
A-大小端距离;
B-砖宽;
C-大端尺寸;
D-小端尺寸。
图1 沟槽类型和位置
4.2.3 沟槽辨认标记组合
图2给出了四种沟槽组合,每种砖型可任选其中一种,同一环中的不同砖型应选择不同形式的沟槽组合以便于区分。
标引序号说明:
1-砖的中心线和标记中心线。
图2 沟槽辨认标记组合
4.3 色标法
采用色标法是对 4.2沟槽法的补充。色彩标记应在发运之前涂在耐火砖的热面上,标记颜色可从白色、黄色、红色、绿色,蓝色中选择,所选颜色应与耐火砖本体颜色形成较大的对比,使其能够清晰地被辨认。
Hot-face identification marking of refractory bricks for use in rotary kilns
1 Range
This document specifies a method for marking the hot surfaces of rotary refractory bricks.
This document is applicable to the design and selection of hot surface marking of rotary close firebrick.
2 Normative reference documents
There are no normative references in this document.
3 Terms and definitions
There are no terms and definitions to be defined in this document.
4 Technical Requirements
4.1 General Rules
The groove method is usually used to mark the hot surface of refractory brick in rotary kiln. According to the need, the color code method can be used as a supplementary marking Note: Whether the color code is needed is agreed by the supply and demand parties.
4.2 Groove Method
Groove type.
4.2.1 Trench Type
For ease of identification, the shape of each trench should be different and deep into the brick body. All notch edges should be curved. Figure 1 shows three groove shapes, one of which can be selected. The size of the groove is not specified.
4.2.2 Marking Positions
The groove should be located on the center line of the hot surface of the firebrick or on a line about 66 mm from the center line, as shown in Figure 1
Index number description:
1- Groove marking center line:
2- Center line of brick and mark center line;
A- end distance;
B- brick width;
C- large end size;
D- Small end size.
Figure 1 Trench type and location
4.2.3 Groove identification label combination
Figure 2 shows four groove combinations, one of which can be selected for each brick type, and different types of groove combinations should be selected for different brick types in the same ring to facilitate differentiation.
Index number description:
1- Brick center line and mark center line.
FIG. 2 Combination of trench identification marks
4.3 Color coding method
The use of color coding method is a supplement to 4.2 groove method. The color mark should be painted on the hot surface of the firebrick before shipment. The color of the mark can be selected from white, yellow, red, green, and blue. The selected color should be in contrast with the body color of the firebrick so that it can be clearly identified.
