不锈钢板在使用过程中应注意缺陷的产生。冷弯钢板或带钢在冷状态下弯曲成各种截面形状的成品钢。冷弯钢是一种经济的截面轻薄壁钢，也称为钢制冷弯型材或冷弯型材。c型钢是由C型钢成型机自动加工而成。C型钢成型机可以根据给定的C型钢尺寸自动完成C型钢的成型工艺。型钢是一种具有一定截面形状和尺寸的条形钢，是四大钢材品种之一。根据截面形状，型钢分为简单的断面型钢和复杂的断面型钢。C型钢、断面型钢、夹层型钢等。

Attention should be paid to the occurrence of defects in stainless steel plates during use. Cold formed steel plates or strips are produced by bending them into various cross-sectional shapes in a cold state. Cold formed steel is a type of economical lightweight wall steel, also known as steel cold formed profiles or cold formed profiles. C-shaped steel is automatically processed by a C-shaped steel forming machine. The C-shaped steel forming machine can automatically complete the forming process of C-shaped steel according to the given C-shaped steel size. Section steel is a type of strip steel with a certain cross-sectional shape and size, and is one of the four major steel varieties. According to the shape of the cross-section, steel sections are divided into simple and complex sections. C-shaped steel, cross-sectional steel, sandwich steel, etc.

C型钢缺陷的形态表现

Morphological Manifestation of Defects in C-shaped Steel

小纵向裂纹，C型钢表面小纵向裂纹形态小于200mm，宽度小于3mm，深度小于0.3mm。mm。

Small longitudinal cracks, the shape of small longitudinal cracks on the surface of C-shaped steel is less than 200mm, the width is less than 3mm, and the depth is less than 0.3mm. Mm.

二是峰状裂纹，裂纹发生在所有C型钢的5-60毫米表面，宏方向垂直于轧制方向，作为“峰状”形状。

The second is peak like cracks, which occur on the 5-60mm surface of all C-beams, with a macro direction perpendicular to the rolling direction, serving as a "peak like" shape.

第三。边缘裂纹主要发生在距离C型钢边缘20-80毫米的地方，是一系列大小不一的平行纵向裂纹。规则是C型钢的规格越厚越宽，这种缺陷就越严重。

Thirdly. Edge cracks mainly occur at a distance of 20-80 millimeters from the edge of C-shaped steel, and are a series of parallel longitudinal cracks of varying sizes. The rule is that the thicker and wider the specification of C-shaped steel, the more severe this defect becomes.

4、常分布夹杂、结疤、夹杂、结疤现象，精加工操作后出现边缘火焰裂纹检查、铸坯火焰清洗等现象明显。

4. Frequently distributed inclusions, scabs, inclusions, and scabs occur, and obvious phenomena such as edge flame crack inspection and billet flame cleaning occur after finishing operations.

造成缺陷的原因

Causes of defects

小晶体纵裂形成少量杂质;峰状裂纹的主要原因是由于皮下裂纹的外侧，板坯的横向角;由于轧制过程中板坯边缘的翻转，边缘表面的裂纹;混合，疤痕表面处理不干净，因为糟粕。

Longitudinal cracking of small crystals forms a small amount of impurities; The main reason for peak shaped cracks is due to the lateral angle of the slab on the outer side of the subcutaneous crack; Due to the flipping of the edge of the slab during the rolling process, cracks on the surface of the edge; Mixing, the surface treatment of scars is not clean due to dross.

型钢产生租赁缺陷的原因和措施

Reasons and Measures for Lease Defects in Section Steel

预防缺陷的措施

Measures to prevent defects

结晶器定期检查，尤其是在水样中，以检查是否有小杂质，造成水质变化。

Regularly inspect the crystallizer, especially in the water sample, to check for small impurities that may cause changes in water quality.

2。严格控制设备超龄使用，确保扇形段及时维修，避免扇形段局部滚轮不转动造成的深度划痕。

2. Strictly control the use of equipment beyond its age, ensure timely repair of the sector section, and avoid deep scratches caused by local rollers not rotating in the sector section.

3.在防潮控制区域内有弯曲部分，在弯曲成脆性区域时，控制角单元的动态温度板坯端面具有不同宽度，以避免温度板坯的角落。

3. In the moisture-proof control area, there are curved parts. When bending into a brittle area, the dynamic temperature of the control angle unit has different widths on the end face of the slab to avoid corners of the temperature slab.

4.宽度C型钢的端面与钢坯生产宽度相同，以减少C型钢的滚动，从而降低C型钢在宽度变形轧制过程中边缘的不均匀性，削弱时C型钢边缘的开裂宽度扩大。

4. The end face of the width C steel is the same as the production width of the billet to reduce the rolling of the C steel, thereby reducing the unevenness of the edges during the width deformation rolling process of the C steel. When weakened, the crack width of the edges of the C steel increases.

5、提高加热炉铸坯温度均匀性，优化板坯加热工艺，降低铸坯低温差，降低轧件变形抗力差，降低轧件边缘不均匀变形。

5. Improve the temperature uniformity of the heating furnace billet, optimize the slab heating process, reduce the low temperature difference of the billet, reduce the deformation resistance difference of the rolled piece, and reduce the uneven deformation of the edge of the rolled piece.

6、提高铸坯的精整性，避免出现二次缺陷，如氧化渣清理不彻底、局部深度烧痕等。

6. Improve the precision of the casting billet and avoid secondary defects such as incomplete cleaning of oxide slag and local deep burn marks.

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