標準編號:	QC/T 1191-2023
中文名稱:	乘用車轉向器齒條
英文名稱:	Rack of steering gear for passenger car
中標分類:	T23    轉向與操縱系統
行業分類:	QC    汽車行業標準
ICS分類:	43.040.50 43.040.50    傳動裝置、懸掛裝置 43.040.50
發布機構:	中華人民共和國工業和信息化部
發布日期:	2023-4-21
實施日期:	2023-11-1
標準狀態:	valid
翻譯語言:	英文
文件格式:	PDF
中文字符數:	26000 字
翻譯價格(元):	1820.0
交付時間:	付款后 1~5 個工作日

Rack of steering gear for passenger car 1 Scope This document specifies the technical requirements and test and testing methods for the racks of steering gear for passenger cars. This document is applicable to the racks of steering gear for passenger cars (the parts on mechanical properties and heat treatment are applicable to medium-carbon and medium-alloy structural steels). 2 Normative references The following documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 228.1 Metallic materials - Tensile testing - Part 1: Method of test at room temperature GB/T 229 Metallic materials - Charpy pendulum impact test method GB/T 5617 Determination of effective depth of hardening after induction or flame hardening of steel QC/T 529-2013 Motor vehicles - Hydraulic power steering gear - Technique requirements and test methods QC/T 972-2014 Technical requirements and test method for motor vehicle-electronically controlled hydraulic power steering gear QC/T 1081-2017 Automobile electrical power steering gear QC/T 29096-2014 The bench test methods of automobile steering gear QC/T 29097-2014 The technical specifications of automobile steering gear ISO 16232 Cleanliness 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 edge hardness hardness measured near the edge of the specimen with a durometer Note: Considering influence factors such as the stability of the specimen under stress during test, the influence depth of the straightening of the outer surface of the specimen and the size of the indenter of the durometer, the position is generally selected at about 2mm from the outer edge of the indentation to the outer surface. 3.2 a quarter of D hardness hardness at half of the radius 3.3 surface hardness hardness measured directly by a durometer on the surface of rack material cylinder Note: When steering gear manufacturers are more concerned about the surface hardness, they may choose to test the hardness at this position. However, because the indentation is curved when the hardness is detected at this position, the hardness value is not accurate enough. The hardness value shall be compensated according to the curvature radius of the material and the hardness testing standard. 4 Technical requirements 4.1 General requirements 4.1.1 The racks of steering gear for passenger cars shall be manufactured, verified and validated in accordance with prescribed procedures and design specifications, drawings and process requirements. 4.1.2 The overall structure of a rack of steering gear for passenger car includes the threaded ends on both sides, gear milling section, ball screw, or polished rod. 4.1.3 Potential failure mode analysis and corresponding strength calculation shall be carried out in the design process of racks of steering gear for passenger cars.

Contents Foreword II 1 Scope 2 Normative references 3 Terms and definitions 4 Technical requirements 5 Tests and testings

乘用車轉向器齒條 1 范圍 本文件規定了乘用車轉向器齒條的技術要求和試驗、測試方法。 本文件適用于乘用車轉向器齒條(其中機械性能和熱處理部分適用于中碳和中合金結構鋼)。 2 規范性引用文件 下列文件中的內容通過文中的規范性引用而構成本文件必不可少的條款。其中，注日期的引用文件，僅該日期對應的版本適用于本文件；不注日期的引用文件，其最新版本(包括所有的修改單)適用于本文件。 GB/T228.1 金屬材料 拉伸試驗 第1部分：室溫試驗方法 GB/T 229 金屬材料 夏比擺錘沖擊試驗方法 GB/T 5617 鋼的感應淬火或火焰淬火后有效硬化層深度的測定 QC/T 529—2013 汽車液壓動力轉向器技術條件與試驗方法 QC/T972—2014 汽車電控液壓助力轉向器總成技術要求和試驗方法 QC/T 1081—2017 汽車電動助力轉向裝置 QC/T 29096—2014 汽車轉向器總成臺架試驗方法 QC/T 29097—2014 汽車轉向器總成技術要求 ISO 16232 清潔度標準 3 術語和定義 下列術語和定義適用于本文件。 3.1 邊緣硬度 edge hardness 用硬度計在靠近試樣的邊緣處測得的硬度。 注：該位置考慮檢測時試樣受力時的穩定性、試樣外表面的矯直影響深度和硬度計的壓頭大小等影響因素，一般選在壓痕外邊緣距離外表面2mm 左右的位置。 3.2 1/4D 硬度 a quarter of D hardness 半徑一半處位置的硬度。 3.3 硬度 surface hardness 用硬度計在齒條材料圓柱體表面位置直接測得的硬度。 注：當轉向機廠家對表面硬度比較關注時，可以選擇檢測該位置硬度。但由于該處檢測硬度時，壓痕是曲面的，硬度值是不夠準確的。應依據材料曲率半徑按硬度檢測標準進行補償。 4 技術要求 4.1 一般要求 4.1.1 乘用車轉向器齒條應按照規定程序及設計規范、圖樣和工藝要求進行制造、驗證和確認。 4.1.2 乘用車轉向器齒條從總體結構上包括兩側螺紋端、銑齒段、滾珠絲杠或光桿等部分。 4.1.3 乘用車轉向器齒條在設計過程中應進行潛在失效模式分析和相應的強度核算。