公开(公告)号：WO2018037421A1

公开(公告)日：2018-03-01

申请号：PCT/IN2016/050379

申请日：2016-11-03

Applicant: SIDDHI ENGINEERS

Inventor： PATEL, Bhagwat Ramanbhai ,  GANDHI, Prashant Ramniklal ,  PATEL, Shailesh Ramanlal

IPC: C22C38/00 ,  B23K11/00 ,  C21D1/42 ,  C22C38/04 ,  B21D3/00 ,  B65H75/50

CPC classification number: B23K11/16 ,  B21D3/00 ,  B21D5/14 ,  B23K11/002 ,  B23K11/0873 ,  B23K2101/06 ,  B23K2101/18 ,  B23K2103/04 ,  B65H75/10 ,  B65H75/50 ,  C21D1/42 ,  C21D9/08 ,  C22C38/00 ,  C22C38/04 ,  Y02P10/253

Abstract: The present invention relates to a process for manufacturing steel Cheese Tubes/Jumbo Tubes/Pipes for woven‐sacks and Cops/Bobbins/Pirns for synthetic yarn. In process of present invention, strip of basic steel grade (SAE 1020, SAE 1026, ST 52, ST 52.3, SAE 1541 and MC 11 and similar or equivalent grades.) is selected as feed stock. The strip undergoes forming process to form steel Tube/Pipe and faying edges of said steel Tube/Pipe are welded through electrical resistance welding (ERW). Thereafter, ERW tube/Pipe is straightened on hyperbolic Tube/Pipe straightening machine. The straightened Tube/Pipe is hardened by induction hardening at 900 °C‐950 °C to achieve enhanced tensile strength and improved elongation to withstand the pressure exerted on steel Cheese Tubes/Jumbo Tubes/Pipes during winding of flat tape yarn for woven sacks and Cops/Bobbins/Pirns during winding of Nylon (Polyamide) and Polyester synthetic yarn. Thereafter, the Tube/Pipe is optionally subjected to coating particularly for cheese tube/pipe and jumbo tube/pipe.

Abstract translation: 本发明涉及一种用于制造用于合成纱线的编织袋和警察/骨架/棉花的钢制芝士管/大型管/管的方法。 在本发明的方法中，选择基本钢等级钢带（SAE 1020，SAE 1026，ST 52，ST 52.3，SAE 1541和MC 11以及类似或等同等级）作为原料。 钢带经过成形过程形成钢管/钢管，所述钢管/钢管的焊接边缘通过电阻焊（ERW）焊接。 此后，ERW管/管在双曲管/管矫直机上矫直。 拉直的管/管在900℃〜950℃下通过感应硬化而被硬化，以实现提高的拉伸强度和改进的伸长率，以承受在织造扁平带纱期间施加在钢芝士管/巨型管/管上的压力 尼龙（聚酰胺）和聚酯合成纱的卷绕过程中的麻袋和警察/枪管/皮恩斯。 此后，管/管可选地经受涂层，特别是用于干酪管/管和大管/管。

公开(公告)号：WO2019123485A1

公开(公告)日：2019-06-27

申请号：PCT/IN2018/050869

申请日：2018-12-22

Applicant: SIDDHI ENGINEERS

Inventor： PATEL, Bhagwat Ramanbhai ,  GANDHI, Prashant Ramniklal ,  PATEL, Shailesh Ramanlal

IPC: C21D1/42 ,  C21D8/10 ,  C21D9/08 ,  C21D1/18 ,  C21D1/02 ,  C21D7/02 ,  C22C38/00 ,  C22C38/04

Abstract: The present invention relates to a process of induction hardening treatment at steel cheese tube edge for high impact resistance. More particularly, it relates to induction hardening treatment only at the edges of steel cheese tube used in winding flat tape yarn. Steel hardening is followed by process of heating and quenching the ends of steel tube. An induction hardening provides improved protection to the edges when the tube with filled up flat tape yarn or empty tube undergoes repeating rotations, movement, transportation, handling as well as during inserting/loading the cheese tubes on spindle winder machines. It is also cost effective in terms of repeated number of rotations in winding process. The present invention provides advantages in terms of super high strength at the ends and protection against deformation, combination of ductility and strength at the central portion of the tube, light weight, multiple usage and longer life coupled with economy per usage.

公开(公告)号：WO2016046844A2

公开(公告)日：2016-03-31

申请号：PCT/IN2015/050113

申请日：2015-09-17

Applicant: SIDDHI ENGINEERS

Inventor： PATEL, Bhagwat Ramanbhai ,  GANDHI, Prashant Ramniklal

IPC: C22C21/04

CPC classification number: C22C21/08 ,  C22F1/043

Abstract: The present invention relates to a process for manufacturing of aluminium alloy cheese tube/ cheese pipe or bobbin for woven sack. The present invention provides light weight, strong and accurate product made from specific aluminum alloys (i.e. 6082 or 6061) duly cold drawn and heat treated to achieve very high strength to weight ratio. The primary billets of aluminum alloys are subjected to a porthole extrusion process sequentially it is subjected to cold drawn for reducing the cross sectional area of the tube. After cold drawn, tubes are further solution treated by special quenching of fog or water. Solution treated porthole extruded aluminum alloy tube can also be used as feed stock. After successive cold drawing, the tubes are straightened on the straightening machine to relieve stress and subsequently the age hardening is carried out to achieve desired tensile strength and percentage elongation in the product.

Abstract translation: 本发明涉及一种制造用于编织袋的铝合金芝士管/芝士管或线轴的方法。 本发明提供了由特定的铝合金（即6082或6061）适当冷拉和热处理以达到非常高的强度重量比的轻质，坚固和精确的产品。 铝合金的主要坯料依次进行舷窗挤压工艺，对其进行冷拉制以减小管的横截面积。 在冷拉制之后，通过雾或水的特殊淬火对管进一步进行溶液处理。 固溶处理的舷窗挤压铝合金管也可用作原料。 在连续冷拉伸之后，在矫直机上矫直管以缓解应力，随后进行时效硬化以达到所需的拉伸强度和产品中的伸长百分比。