Bi thép tròn và bi thép đa cạnh làm sạch bề mặt kim loại

Có rất nhiều loại cát kỹ thuật sử dụng trong quá trình phun cát. Bài viết dưới đây đề cập đến hai loại hạt phổ biến là bi thép tròn và bi thép đa cạnh. Cả hai loại hạt mài này đều được sản xuất từ thép phế liệu được nung chảy, biến đổi và sau đó được hóa cứng thành hình dạng tròn (Shot) hoặc các hạt đa cạnh (Grit).

Bi thép tròn

Hạt bi thép tròn làm sạch kim loại
Hạt bi thép tròn làm sạch kim loại

Hạt thép tròn tạo ra một bề mặt kim loại mịn. Hình dạng tròn không những làm sạch bề mặt hiệu quả mà còn có tác dụng để làm mờ bề mặt, tạo ra một bề mặt sạch, mịn và đôi khi được sử dụng để đánh bóng bề mặt. Hạt càng nhỏ thì khả năng đánh bóng càng tốt, bề mặt càng mịn. Hạt thép tròn thích hợp khi sử dụng các loại máy phun bi tự động.

Bi thép đa cạnh

Hạt bi thép đa cạnh
Hạt thép đa cạnh

Hạt thép đa cạnh được sử dụng khi cần làm sạch các bề mặt bị ô nhiễm nặng. Với nhiều góc cạnh sắc nhọn, thép đa cạnh làm sạch bề mặt nhanh hơn khoảng 20% so với hạt tròn. Bạn hoàn toàn có thể trộn hạt tròn với hạt đa cạnh theo tỉ lệ thích hợp để mang lại bề mặt như mong muốn. Thép đa cạnh thích hợp khi sử dụng máy phun cát khí nén. 3 loại độ cứng của hạt đa cạnh bao gồm:

  • GL: góc cạnh hoàn hảo, độ cứng tốt, làm sạch bề mặt sâu

  • GH: là loại hạt có độ cứng trung bình đươc sử dụng nhiều nhất để làm sạch và đặc biệt phù hợp với việc tẩy cặn và các ứng dụng chuẩn bị bề mặt.

  • GP: Với độ cứng tối đa, luôn luôn vẫn còn góc trong hỗn hợp hoạt động. Các chất mài mòn này, đặc biệt hiệu quả trong quá trình xử lý bề mặt và tạo ra một lớp phủ hoàn thiện, đồng nhất, sử dụng chủ yếu với các thiết bị khí nén

Growell Việt Nam chuyên cung cấp các loại cát kỹ thuật – hạt bi thép – hạt thép đa cạnh – hạt oxit nhôm – hạt thủy tinh làm sạch với giá cả cạnh tranh nhất thị trường – hàng luôn có sẵn tại kho.

Liên hệ ngay với chúng tôi để được tư vấn chi tiết

Hotline Growell

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