标准编号:	QC/T 1191-2023
中文名称:	乘用车转向器齿条
英文名称:	Rack of steering gear for passenger car
中标分类:	T23    转向与操纵系统
行业分类:	QC    汽车行业标准
ICS分类:	43.040.50 43.040.50    传动装置、悬挂装置 43.040.50
发布机构:	中华人民共和国工业和信息化部
发布日期:	2023-4-21
实施日期:	2023-11-1
标准状态:	valid
翻译语言:	英文
文件格式:	PDF
中文字符数:	26000 字
翻译价格(元):	1820.0
交付时间:	付款后 1~5 个工作日

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

乘用车转向器齿条 1 范围 本文件规定了乘用车转向器齿条的技术要求和试验、测试方法。 本文件适用于乘用车转向器齿条(其中机械性能和热处理部分适用于中碳和中合金结构钢)。 2 规范性引用文件 下列文件中的内容通过文中的规范性引用而构成本文件必不可少的条款。其中，注日期的引用文件，仅该日期对应的版本适用于本文件；不注日期的引用文件，其最新版本(包括所有的修改单)适用于本文件。 GB/T228.1 金属材料 拉伸试验 第1部分：室温试验方法 GB/T 229 金属材料 夏比摆锤冲击试验方法 GB/T 5617 钢的感应淬火或火焰淬火后有效硬化层深度的测定 QC/T 529—2013 汽车液压动力转向器技术条件与试验方法 QC/T972—2014 汽车电控液压助力转向器总成技术要求和试验方法 QC/T 1081—2017 汽车电动助力转向装置 QC/T 29096—2014 汽车转向器总成台架试验方法 QC/T 29097—2014 汽车转向器总成技术要求 ISO 16232 清洁度标准 3 术语和定义 下列术语和定义适用于本文件。 3.1 边缘硬度 edge hardness 用硬度计在靠近试样的边缘处测得的硬度。 注：该位置考虑检测时试样受力时的稳定性、试样外表面的矫直影响深度和硬度计的压头大小等影响因素，一般选在压痕外边缘距离外表面2mm 左右的位置。 3.2 1/4D 硬度 a quarter of D hardness 半径一半处位置的硬度。 3.3 硬度 surface hardness 用硬度计在齿条材料圆柱体表面位置直接测得的硬度。 注：当转向机厂家对表面硬度比较关注时，可以选择检测该位置硬度。但由于该处检测硬度时，压痕是曲面的，硬度值是不够准确的。应依据材料曲率半径按硬度检测标准进行补偿。 4 技术要求 4.1 一般要求 4.1.1 乘用车转向器齿条应按照规定程序及设计规范、图样和工艺要求进行制造、验证和确认。 4.1.2 乘用车转向器齿条从总体结构上包括两侧螺纹端、铣齿段、滚珠丝杠或光杆等部分。 4.1.3 乘用车转向器齿条在设计过程中应进行潜在失效模式分析和相应的强度核算。