Home ﹥ Quality > 其他 > Technical Advice / FAQs 2015-12-19
Q1: For socket set screw, what is the black oxide process?
A: Socket set screw is different from DIN912, for DIN912 items, black oxide process can be achieved in the heat treatment furnace. For socket set screw, the process cannot be achieved in the heat treatment furnace, it has to be done separately, so the items are sent to out sourced professional cooperates for the black oxide treatment.
Q2: What is the standard of the set screw production?
A: Metric size items are as per DIN EN ISO 2003 Standard.
Inch size items are as per IFI standard.
A: The material VM use for socket set screw is SCM435. The materials are mostly from (China Steel Corporation from Taiwan and Nippon Steel & Sumitomo Metal Corporation). Heat treatment 45H (HRC45-53). Socket set screws are headless screws, so tensile strength test is not applicable, but torque value is examined.
Q4. What's the method of testing for the socket set screws?
A: Metric size item: 6g6g.
Zinc plated: 6h.
Inch size item: 3A ring gauge.
Q5:Do you produce the item in other material?
A: For the socket set screw, the materials are available in
Brass: C2600/C2700,
Stainless Steel: A2(302/303/304), A4(316/316CU),
for all other material, please write us for more information.
If any questions, please don't hesitate to contact us. Thank you!
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Q1:止付螺絲一般處理是黑化還是染黑?
A:止付螺絲不同於DIN912 螺絲,目前的技術無法在熱處理時以氣體或溫度變化...
等手段產生黑色色變,它必須於熱處理完後,送專業之染黑廠完成染黑工作。
Q2:貴公司止付螺絲生產之標準?
A:本公司生產之止付螺絲檢驗標準公制全依 DIN EN ISO 2003 年規範,
英制全依IFI規範生產。
Q3:止付螺絲機械性能為何?
A:本公司止付螺絲採用材料為SCM435, 材料來源大多為
(台灣的中鋼公司及日本新日鐵鋼廠) 熱處理為45H(HRC45-53),
止付螺絲因為沒有頭部,所以正常情況下無法測拉力,只有測扭力值。
Q4:貴公司環規測試標準
A:本公司公制是採用6g6g固定式環規,英制採用3A牙可調式環規為標準,
電鍍後之標準公制標準為6h。
Q5:貴公司有生產其他的材料產品嗎?
A:我們止付螺絲有生產銅C2600/C2700,鋁6011/2011/2024,
白鐵A2(302/303/304)A4(316/316CU)其他特殊材料可來信詢問。
以上問題,如有錯誤,承蒙先進來信告知,不勝感激!