934-1型巴氏硬度計：934-1巴氏硬度計（巴克爾）是一種壓痕式。934-1巴氏測試快速，簡便，一壓即可，用于快速測試鋁及鋁合金材料的硬度，符合美國標準ASTM B648。
934-1型巴氏用途
巴氏主要用于測試鋁及鋁合金硬度，也可以測試其他軟金屬及玻璃鋼制品的硬度。可以測試各種超大、超寬、超厚的工件及裝配件，測試板材、帶材、型材、鍛件、鑄件等。在鋁加工行業被廣泛使用的W-20型韋氏，適用于大部分鋁合金。對于2024、7075等牌號超硬鋁合金，可使用W-B75型韋氏，也可使用巴氏。對于純鋁、低硬度鋁合金、特別厚的鋁合金及其他不便使用韋氏的鋁合金工件應使用巴氏。巴氏一般做為韋氏的補充，在測試純鋁、低硬度鋁合金和超大、超厚材料時使用。
934-1型巴氏的優點
- 體積小，重量輕（510g），便于攜帶。
- 單手操作，無須使用經驗，在任何場合，只要伸手可及均可測試。
- 測試范圍寬。從很軟的純鋁到特別硬的鋁合金均可測試，有效測試范圍相當于布氏硬度25～150HB。
- 靈敏度高。韋氏只有20個刻度，而巴氏有100個刻度，巴氏具有更高的靈敏度。
- 無需支撐。巴氏只在試樣一側測試，無需支撐，適于測試超大、超厚工件及裝配件。
934-1型巴氏的缺點
- 要求試樣有較寬的平坦表面。因此不便于測試窄條試樣、小尺寸試樣和曲面試樣。
- 硬度換算誤差較大。在測試鋁型材時，要將巴氏硬度換算成韋氏硬度，而巴氏的換算表和國家有色標準YS/T420- 2000上的換算表相差2.7個韋氏硬度單位。因此，巴氏的換算表應慎重使用。
- 巴氏硬度塊存在缺陷。巴氏硬度塊的厚度只有0.8mm，測試后，硬度塊背面會產生可見的變形痕跡，這說明硬度塊的厚度不足，這一點違背了壓痕式關于試樣厚度的基本原則，會帶來較大的測試誤差。
934-1型巴氏的標準配置
- 主機 1臺
- 標準硬度塊 2塊
- 校正扳手 1個
- 備用壓針 2支
934-1型巴氏的可選附件
- 標準硬度塊 高值 87-89
- 低值 43-45
- 備用壓針
934-1型巴氏英文介紹：
The Barcol Impressor
Hand-Held Portable Hardness Tester
manufactured by Barber-Colman
Official barcol impressor scale, for testing of:
- Aluminum Alloys
- Soft Metals
- Plastics
- Fiberglass Sheet, Tanks, Surfaces
- Fire Department Ladders
- Composite Materials
- Rubber or Leather
- Laminates
- Lead
The Barcol Impressor meets the following ASTM (American Society for TestingMaterials) standards: E140-97; D2583-75; B648-78: E140-97 Standard Hardness Conversion Tables for Metals; D2583-75 Standard Method of Testing for Indentation Hardness of Plastics by means of a Barcol Impressor; B648-78 Standard Method of Testing for Indentation Harness of Aluminum Alloys by means of a Barcol Impressor.
Fire Department version: The Barcol Impressor meets the following NFPA (National Fire Protection Association) standards: NFPA 1931 Design ofDesign Verification Tests for Fire Department Ground Ladders; NFPA 1932 Use, Maintenance,Service Testing of Fire Department Ground Ladders.
The original Barcol Impressor was invented by Walter Colman (who founded Barber-Colman) to assist the US Army Air Corps in avoiding sabotage in WW II. Fifty years later, the same Barcol product has been used to perform hardness testing on repairs to the USA Space Shuttle
Description
Portable：The Impressor is a convenient tool for testing the hardness of aluminum, aluminum alloys, copper, brassother materials including plasticsfiberglass. The instrument is designed for use on fabricated partsassemblies as well as on raw stock.
Easy to Use：No experience required; can be used in any positionin any space that will allow for the operator''s hand. The hardness reading is instantly indicated on the dial, which is divided into one hundred graduations. No waiting, pre-loading or separate measurements.
Lightweight：The Impressor weighs only 1 lb. 2 oz. The entire Impressor package comes complete with carrying case, adjusting wrenchtwo spare indenter points. The Impressor + case = 2 lb. 8oz. Shipping weights = 4 pounds, box = 12 x 11 x 6 inches, dimensional weight 5 pounds. (1.8 kilograms, box = 21 x 28 x 16 cm, dimension weight 2.5 Kilograms)
Applications Four Models
Available：GYZJ 934-1 for soft metals such as aluminumits alloys, brass, copper,some of the harder plasticsfiberglass. Approximate range 25 to 150 Brinell (10 mm ball 500 kg load). This unit meets American Society for TestingMaterials (ASTM) Standard D2583.
GYZJ 934-1-0-1 a variation of the 934-1 that has a "flat bottom" shaped support leg. This is used to sit on top of the crest of the round rung of a ladder such as a fire department ladder. Approved by the NFPA, National Fire Protection Agency.
GYZJ 935 for the softer plasticsvery soft metals.
GYZJ 936 for extremely soft materials such as lead, linoleumleather.
